Question

2.
Resolva as seguintes equações:
a) 8 - 7x + 2x=4 - 3x
b) 12-3x = -x +12-3x
c) 2(-x+5)+3(x+5)= 21
d) 3(x-3), 2(x+2) =3(1-x)
+​

Answer 1

Explicação passo-a-passo:

a) 8 - 7x + 2x=4 - 3x

-7x+2x+3x=4-8

-2x=-4

2x=4

x=4/2

x=2

b) 12-3x = -x +12-3x

-3X+x+3x=12-12

x=0

c) 2(-x+5)+3(x+5)= 21

-2x-10+3x+15=21

-2x+3x=21+10-15

x=16

d) 3(x-3), 2(x+2) =3(1-x)

3x-9+2x+4=3-3x

3x-3x+2x=3-4+9

2x=8

x=8/2

x=4

Espero ter ajudado :)