Question

Resolva as equações
3x+2=x+5
16x_52=4x_4
7.(x_6)=21
4.(x+2)=x+1,1

Answer 1

A)
$3x+2=x+5$
$2x=3$
$x=3/2$
B)
$16x-52=4x-4$
$12x=-4+52$
$12x=48$
$x=48/12=4$
C)
$7*(x-6)=21$
$7x-42=21$
$7x=63$
$x=63/7=9$
D)
$4*(x+2)=x+1,1$
$4x+8=x+1,1$
$3x=1.1-8$
$3x=-6.9$
$x=-6.9/3=-2.3$

Answer 2

a primeira = 4x=3
x=0.75

14x=48=3,4285714285714284

7x=-21=-3

3x=-6,9=-2.3