Friday

January 30, 2015

January 30, 2015

Posted by **Sara!** on Wednesday, June 9, 2010 at 7:06pm.

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! -
**Ana**, Wednesday, June 9, 2010 at 7:25pm1. 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! -
**Ana**, Wednesday, June 9, 2010 at 7:32pm2. 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! -
**Sara!**, Wednesday, June 9, 2010 at 7:33pmhow do you solve # 2

- MATH! -
**Sara!**, Wednesday, June 9, 2010 at 7:35pmoh i mean # 3

- MATH! -
**Ana**, Wednesday, June 9, 2010 at 7:37pmSubtract 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! -
**Sara!**, Wednesday, June 9, 2010 at 7:38pm# 2 is 20

- MATH! -
**Ana**, Wednesday, June 9, 2010 at 7:40pmNo 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! -
**Sara!**, Wednesday, June 9, 2010 at 7:49pmit is 3!

- MATH! -
**Reiny**, Wednesday, June 9, 2010 at 8:00pmI 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

**Answer this Question**

**Related Questions**

Algebra - - ok... we keep getting this one wrong: Solve the following equation ...

Math - how do you solve this I keep trying and I keep getting the wrong answer. ...

8th Grade Algebra- Answer Check - Solve each system of equations, give the ...

algebra 1 - -2/3z=-4/9 i tried to solve, but i keep on getting the wrong answer...

PLEASE HELP ME! PLEASE! - 1 )3x + 8y = 1 7x + 4y = 17 Answer: (3,1) 2) -3x + 5y...

gr.10 math - could you please show me the steps to solve this equation?I looked ...

Math - Hi, I am getting very frustrated. I am doing an online homework for ...

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

Math - (7.66 • 10^2)(6.29 • 10^-4) answer then convert to scientific notation. ...

Math - I can't figure out 6 - 2/3r = 1 1/2 The way we're learning how to solve ...