a) 4(x-1)=(x+1)b)3 (2x+3)=x-1c)3 (x-2)=xd) 2 (x+1)=4
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a) 4(x-1)=(x+1)4x - 4 = x + 14x - x = 1 + 43x = 5 /:3x = 5/3b) 3(2x+3)=x-16x + 9 = x - 16x - x = -1 - 95x = -10 /:5x = -2c) 3(x-2)=x3x - 6 = x3x - x = 6 2x = 6 /:2x = 3d) 2(x+1)=42x + 2 = 42x = 4 - 22x = 2 /:2x = 1
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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