Question

How do you solve `5x-3=12`?

Answer 1

`x=3`

Explanation:

`5x-3=12" "`the given

`5x-3+3=12+3" "`Addition property of equality

`5x=15" "`simplification

`(5x)/5=15/5" "`Division property of equality

`x=3`

God bless....I hope the explanation is useful.

Answer 2

x = 3

Explanation:

We need to isolate the term 5x on the left side and place the numeric terms on the right.

To achieve this we add 3 to both sides.

`5xcancel(-3)color(red)cancel(+3)=12color(red)(+3)`

we now have 5x = 15

To obtain x , divide both sides by 5.

`(cancel(5)^1 x)/cancel(5)^1=cancel(15)^3/cancel(5)^1`

`rArrx=3" is the solution"`

check by substituting x = 3 into left side.

`(5xx3)-3=15-3=12 " equals the right side "`