Wednesday
May 22, 2013

# Homework Help: Math

Posted by Sara! on Wednesday, June 9, 2010 at 5:29pm.

how do you solve these problems

1. 3y+5y/3= 8

2.m + 5 = m-3

3.3z/2 - 17/3 = 2z/3 - 3/2

4. -3a + 9 = 3a - 9

• Math - Reiny, Wednesday, June 9, 2010 at 6:36pm

first one ...
multiply each term by 3 to get
9y + 5y = 24
14y = 24
y = 24/14 = 12/7

second ..
no solution

third ... multiply each term by 6 to get
9z - 34 = 4z - 9
easy from there

4th ....
give it a shot, it is so easy.

• Math - Sara!, Wednesday, June 9, 2010 at 6:51pm

# 1 is wrong

and is # 4 no solution?

• Math - Sara!, Wednesday, June 9, 2010 at 6:59pm

i cant get # 4!

• Math - Reiny, Wednesday, June 9, 2010 at 7:34pm

#4,
-3a + 9 = 3a - 9
-6a = -18
a = -18/-6
a = 3

#1

check:
Left Side
= 3(12/7) + 5(12/7) / 3
= 36/7 + 60/21
= 36/7 + 20/7
= 56/7 = 8
= right side

Did you type the equation correctly?

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