a) 2x + 8 = 16 / :2
x + 4 = 8 / -4
x=4
b)
4x - 7 = x + 9
4x - x = 16
3x= 16 /:3
x= 16/3
c)
3(x+2)=2x-7
3x + 6 = 2x - 7
3x-2x= -7 - 6
x= -13
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a)
2x + 8 = 16 / :2
x + 4 = 8 / -4
x=4
b)
4x - 7 = x + 9
4x - x = 16
3x= 16 /:3
x= 16/3
c)
3(x+2)=2x-7
3x + 6 = 2x - 7
3x-2x= -7 - 6
x= -13