Question

For the equation:

5 (2X +7) -15= 15

What might be the first step to solving the equation?

Answer 1

THE FIRST STEP IS TO MULTIPLY EACH AND EVERY TERM IN THE BRACKETS BY 5

`5(2x) + 5(7) - 15 = 15 \\ 10x + 35 - 15 = 15`

THEN GROUP THE LIKE TERMS TOGETHER. WHEN TERMS MOVE ACROSS THE EQUAL SIGN THEY CHANGE SIGNS.

`10x = 15 - 35 + 15 \\ 10x = - 5`

`(10x)/(10) = ( - 5)/(10) \\ x = ( - 5)/(10) \\ x = - (1)/(2)`

ATTACHED IS THE SOLUTION

Answer 2

Using inverse operations to isolate teh variable 'X'.

Explanation: