Question

a)18+5x=28
b)7x-80=60
c)4x+16=-2x+4
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Answer 1

Resposta:

a: 18+5x=28

=> 5x = 28-18

=> x =20/5=4

b: 7x-80=60

=> 7x = 60+80

=> x = 140/7=20

c: 4x+16= -2x +4

=>4x+2x=4-16

=>6x= -12

=>x = -12/6 = -2

Answer 2

Resposta:

a) 18+5x=28

5x=28-18=

5x=10

x=10/5

x=2

b)7x-80=60

7x=60+80=

7x=140

x=140/7

x=20

c)4x+16=-2x+4=

4x+2x=-16+4=

6x=-12

x=-12/6

x=-2

Explicação passo-a-passo: