can someone help me learn how figure out how to do questions like my last 2 posts? It's these questions: -19y = -15 – 16y

ItsTayha
May 10, 2017

#1**+4 **

Sure!

-19y = -15 – 16y

First, add 16y to the left side **and** the right side.

-19y + 16y = -15 - 16y + 16y

This cancels out - 16y from the left, making it easier to solve.

-3y = -15y

Change both signs to a positive (Only if both sides are negative or already positive)

3y = 15

Divide by 3 on both sides.

3y/3 = 15/3

Solve.

y = 5

When you divide 3y by 3, it cancels out the three, because 3/3 is 1, and 1y = y.

So your answer is y = 5

Jelly
May 10, 2017

#4**+2 **

10m – 2 = 9m – 14

Subtract 9m from both sides.

10m - 9m – 2 = 9m - 9m – 14

Solve.

m - 2 = (-14)

Add 2 to both sides. (Do the opposite of the sign it shows. Negative = Positive. Times = Divide)

m - 2 + 2 = (-14) + 2

Solve.

m = (-12)

Always make sure **m**** **positive.

Jelly
May 10, 2017