+0

# How on earth ?

+4
146
10
+108

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
Sort:

#1
+280
+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
#2
+108
+1

What if it has 4 numbers like this : 10m – 2 = 9m – 14

ItsTayha  May 10, 2017
#3
+280
+1

I will show you!

Jelly  May 10, 2017
#4
+280
+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
#5
+108
+1

Wow! I have keep reading that over till I know how to do it!

ItsTayha  May 10, 2017
#6
+280
+2

I am sure you will get it!

Just focus, and keep trying.

Jelly  May 10, 2017
#7
+108
+1

Yeah I might post more of those up, they are in a bio I have for math class

ItsTayha  May 10, 2017
#8
+280
0

I will try to solve all the ones you do put up.

Just for the sake of doing math during school hours xD

Jelly  May 10, 2017
#9
+108
+1

My math teacher doesn't really help us out

ItsTayha  May 10, 2017
#10
+280
0

That isn't a very good teacher =/

Jelly  May 10, 2017

### 4 Online Users

We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. We also share information about your use of our site with our social media, advertising and analytics partners.  See details