Question 199735
(1)  4x +5x -10 = 35
9x -10 =35,,,,,combining  like  terms
9x =45,,,,,,,,adding  10  to  both  sides
x=5,,,,,,,,,,,,,dividing  by  9
.
(2)  9x+6x-12x = -7x +2x -12 +5x
3x = -12,,,,,,,,,combining  like  terms
x=  -4,,,,,,,,dividing  by  3
.