Question

a) 4(x-1)=(x+1)
b)3 (2x+3)=x-1
c)3 (x-2)=x
d) 2 (x+1)=4

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Answer 1

a) 4(x-1)=(x+1)
4x - 4 = x + 1
4x - x = 1 + 4
3x = 5   /:3
x = 5/3

b) 3(2x+3)=x-1
6x + 9 = x - 1
6x - x = -1 - 9
5x = -10   /:5
x = -2

c) 3(x-2)=x
3x - 6 = x
3x - x = 6
2x = 6    /:2
x = 3

d) 2(x+1)=4
2x + 2 = 4
2x = 4 - 2
2x = 2   /:2
x = 1