Question

a) 2 (x +1 ) - 3 (2x -5 ) = 6x -3

b)5 (x + 1 ) + 6 (x + 2 ) = 9 ( x + 3 )

c) x + x = 7 + 2x
_ _ ____
2 3 3

d)2(x -1 ) = 3x + 6
____ _____
3 5

Answer 1

a) 2 (x+1)-3 (2x-5)=6x-3
2x+2-6x+15=6x-3
2x-6x-6x=-3-2-15
14x=-20
x=-20:14

B)

5(x+1) +6 (x+2)=9 (x+3)
5x+5+6x+12=9x+27
5x+6x-9x=27-5-12
2x= 10
x=10:2
x=5