Question

resolva as seguintes equações. a) 4x+5(1-x)=1/2 b) x-1=2x-5+5x

Answer 1

a) 4x+5(1-x)=1/2
4x+5-5x=1/2
-5x+4x-5=1/2
-x=1/2+5 ×(-1)
x=-1/2-5
mmc
2x=-1-10
2x=-11
x=-11/2 x=-5,5

b) x-1=2x-5+5x
5x+2x-x=-1+5
6x=4
x=4/6 divide numerador e denominador por 2
x=2/3.