Question

Solve for x: 5x + 7 - x - 2 = 6x + 3x - 16

Answer 1

solution

5x -x +7 -2= 6x +3x -16

or,4x +5= 9x -16

or,5 +16= 9x -4x

or,21=5x

or,x=21/5

thus,x=4.2 #

Answer 2

x =21/5 or 4.2

Explanation:

Solve for x:

5x + 7 - x - 2 = 6x + 3x - 16

Combine the like terms in LHS and in RHS.

5x - x + 7 - 2 = 6x + 3x - 16

4x + 5 = 9x - 16

Add 16 to both sides.

4x + 5 + 16 = 9x

4x + 21 = 9x

Subtract 4x from both sides.

21 = 9x - 4x

21 = 5x

Divide both sides by 5.

21/5 = x

x = 21/5 or 4.2