Question

What is the first step in solving 3x - 19 = 28?
A. Divide by 3 on both sides.
B. Multiply by 3 on both sides.
C. Add 19 on both sides.
D. Subtract 28 on both sides.

Answer 1

first you try to get all the x's on one side and all the numbers on the other

Answer 2

So D ?

Answer 3

Look at the variable you are lookig for. It's x.
If you had a number for x and you wanted to know what the left sides is equal to you would
1. multiply x by 3
2. subtract 19
In order to solve for x, do the opposite of the operations above in the opposite order.
So start by
1. add 19
2. divide by 3

Answer 4

if you don't understand that ^, I can explain it to you.

Answer 5

Here, 3x - 19 = 28

take , -19 to the right hand side.. and change it's sign..

3x=28+19
3x=47
x=47/3
..