Question

Resolva as equações:

a) 3 = −45 − 2

b) 6( + 3)− 2( − 5) = 20

c) −18 = 2 + 15

d) 2( − 1)− 1 = 8

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Answer 1

a) 3 = −45 − 2

3= -47

b) 6( + 3)− 2( − 5) = 20

18 +10 = 20

28 =20

c) −18 = 2 + 15

-18 = 17

d) 2( − 1)− 1 = 8

-2 -1 = 8

-3 = 8