Question

8x-3=15x+18
A)x=-3
B)x=3
C)x=2.1
D)x=0.9

Answer 1

first thing to remember is to get like terms on one side. So to start off, lets subtract 8x from both sides-

-3 = 15x - 8x + 18

what is 15x - 8x?

Answer 2

7x?

Answer 3

right!

Answer 4

so now, its -3 = 7x+18

No subtract 18 from both sides-

-3 - 18 = 7x

whats -3 - 18?

Answer 5

-21?

Answer 6

Awesome! So-
-21 = 7x

Now divide what is- -21/7 = x

what is -21/7?

Answer 7

x=-3?

Answer 8

Correct! So x = -3

Do you understand?

Answer 9

yea