Question

1) Resolva as equações: a) x + 5 = 8 b) x – 4 = 3 c) x + 6 = 5 d) x – 7 = – 7 e) x + 9 = – 1 f) x + 28 = 11

Answer 1

Resposta:

a)3 b)7 c)-1 d)0 e)-10 f)-17

Explicação passo-a-passo:

a) x+5=8

x=8-5

x=3

b)x-4=3

x=3+4

x=7

c)x+6=5

x=5-6

x=-1

d)x-7=-7

x=-7+7

x=0

e) x+9=-1

x=-1-9

x=-10

f) x+28=11

x=11-28

x=-17