Question

VALENDO 20 PONTOS
COM CALCULOS

Resolva As Equações :

a)2x=16
b)10-4x=x
c)3-x=5x-15
d)4x-6=28
e)5.(3-2x)=55
f)12x+24=8x+96

Answer 1

a) x=8
b)-4x-x=-10(-1)
       5x=10
         x=2
c)-x-5x=-15-3
    -6x=-18(-1)
      6x=18
         x=3
e)15-10x=55
    -10x=55-15
       -10x=40(-1)
         10x=-40
            x=-4
f)12x-8x=96-24
      4x=72
        x=18

Answer 2

a)x=16/2
x= 8

b)10=x + 5x
10= 6x
10/6=x
5/3=x

C)5x-15=3-x
5x+x=3+15
6x=18
x=3

d)4-x=28
4-28=x
-24=x

e)5(3-2x)=55
3-2x=55/5
3-2x=11
-2x= 11-3
-2x=8 x(-1)
2x= -8
x= -8/2
x=-4

f)12x+24=8x+96
12x-8x=96-24
4x=52
x=52/4
x=13