# MATH!

posted by .

plz how do you solve these?- i keep getting the wrong answer

1. 3z/2 - 17/3 = 2z/3 - 3/2

2. 2/5b - 1/4b =3

3. 23 - 6g = 19

please show me step by step how you do these

• MATH! -

1. Make the denominators alike.
3z/2 - 17/3 = 2z/3 - 3/2
9z/2 - 34/6 = 4z/6 - 9/6

Add 34/6 to both sides of the equal sign. The -34/6 and the +34/6 will cancel out on the left. The +34/6 is added to -9/6

9z/6 = 4z/6 + 25/6

Subtract 4z/6 from both sides. It will cancel out on the right side. And it will be subtracted from 9z/6 on the left.

5z/6 = 25/6

Then divide 5/6 from 5z/6 and 25/6, You'll have to multiply the reciprocal of 5/6, which is 6/5.

z= 25/6 * 6/5
z= 150/30 = 5
z= 5

• MATH! -

2. Make the denominators alike.

2/5b - 1/4b =3
8/20b - 5/20b = 3
Then subtract 8/20b and 5/20b.

3/20b = 3

Then multiply 20b by both sides. It will cancel out on the left side, leaving 3 alone.

3=3(20b)
3=60b

Divide 60 by 60b and 3.

b= 3/60 <-- 1/20 (Simplified)

• MATH! -

how do you solve # 2

• MATH! -

oh i mean # 3

• MATH! -

Subtract 23 from both sides. It will cancel out with the +23 on the left.
23 - 6g = 19
-6g= -4

Divide -6 from -6g and -4.

g= -4/-6 <--- g= 2/3

• MATH! -

# 2 is 20

• MATH! -

No the answer to #2 is 1/20 or .05
If it was 20 then the answer would be 3, it'd be 0.0075

• MATH! -

it is 3!

• MATH! -

I always get rid of all my fractions.

#1 look at the denominators, their LCD is 6 , so multiply each term by 6 to get
9z - 34 = 4z - 9
5z = 25
z = 5

#2.
2/5b - 1/4b =3
multiply each term by the LCD, which is 20 to get
8b - 5b = 60
3b = 60
b = 20

## Similar Questions

1. ### Algebra

- ok... we keep getting this one wrong: Solve the following equation for x. Write your answer as a fraction in simplest form. -6(x-5)=-2x-8-6(3x-5) What is it you don't understand about this?
2. ### 8th Grade Algebra- Answer Check

Solve each system of equations, give the solution and state whether there are no solutions or many solutions. 1 )3x + 8y = 1 7x + 4y = 17 Answer: (3,1) 2) -3x + 5y = -7 9x + 2y = 38 Answer: (4,1) 3) 7r + 3s = 13 14r - 15s = -16 Answer: …

1 )3x + 8y = 1 7x + 4y = 17 Answer: (3,1) 2) -3x + 5y = -7 9x + 2y = 38 Answer: (4,1) 3) 7r + 3s = 13 14r - 15s = -16 Answer: (1,2) 4) 2x - 7y = 42 4x - 14y = 64 Answer: No Solution ?
4. ### Math

how do you solve this I keep trying and I keep getting the wrong answer. I keep getting x=19000 and that is not correct .10=.9(x/15000)+.14[(1-x)/15000]
5. ### algebra 1

-2/3z=-4/9 i tried to solve, but i keep on getting the wrong answer, and i do not understand what i am doing wrong. please help.
6. ### gr.10 math

could you please show me the steps to solve this equation?
7. ### 6th grade math

Find the value fir each expression. Show your work. (13.28 - 7.8) divided by 4. I have the answer in the back of my book and when I try to work the problem out I keep getting the wrong answer. The answer is supposed to be 1.345 I can …
8. ### Math

Find 9.62 x 1.005. Can you please show me step by step because I keep getting the wrong answer. Thanks.
9. ### Calculus

Find f(x) so that it satisfies: f'(x)=1/sqrt(x) and f(4)=2. Please show steps I keep getting stuck at the anti derivative and the constant doesn't solve it so I don't know where I went wrong.
10. ### math

How do you solve this? 5x- [1.5 -3.6] [0.2 1.3] [-0.3 2.8]= [-5.6 1.7] 5x/5[-1.5 -3.6] [0.2 1.3] [0.3 -2.8]=[-5.6 1.7] x = [-1.5 3.6] [0.2 1.3] [0.3 -2.8]=[-5.6 1.7] [-1.5 + 0.2 + 3.6 + 1.3] [0.3 + -5.6 + -2.8 + 1.7] x = [-1.3 4.9]

More Similar Questions