Question

1. determine
a)13+4(2x-1)=5(x+2)
b)4(x+5)-3(x+5)=21
c)2(x+5)-3(5-x)=10
d)8(x-1)=8-4(2x-3)

Answer 1

a) 13+8x-4=5x+10
8x-5x=10-13+4
3x=1
x=1/3

b) 4x+20-3x+15=21
4x-3x=21-20-15
x= -14

c) 2x+10-15-3x=10
2x-3x=10-10+15
-x=15 (-1)
x=-15

d) 8x-8=8-8x-12
8x+8x=8-12+8
16x=4
x=16/4=4

espero ter ajudado