Question

resolva as equaçoes do 1 grau A) 7(x-1)=2(3x+1) B)6/5-7/2=4x/10+1/2

Answer 1

A. 7(x-1)=2(3x+1)
7x-7=6x+2
7x-6x=2+7
x=9

B. 6/5-7/2=4x/10+1/2
6×2/10-7×5/10=4x/10+1×5/10
12-35=4x+5
-4x=5+23
-x=28/4
-x=7(-1)
x=-7