Question

Resolva as equações

b) 9-x+2=-5x+3+2x

d)2.(3x-5)-x=10-3x

f) 7.(x-1)-2.(x-5)=x-5

Answer 1

b) -x+11= -3x+3
-x-3x=+3-11
-4x= -8
x= -8/-4
x=+2

c) 6x-10-x=10-3×
5x-10=10-3x
5x+3x=10+10
8x=20
x=20/8÷4
x=5/2

d)7x-7-2x+10=x-5
5x+3=x-5
5x-x=-5-3
4x=-8
x=-8/4
x=-2