Question

Resolva as equações A) 4x-5=0. B)9y-3=1. C) 4-x=5. D)3a-2= -a+1.

Answer 1

A) 4x-5=0 
4x=+5
x=5/4

B) 9y-3=1
9y=1+3
9y=4
y=4/9

C) 4-x=5
-x=5-4
-x=1 
x=-1

D) 3a-2=-a+1
3a+a=+1+2
4a=3
a=3/4