Question

3 - Resolva as seguintes equações:
a) 7x = -21
b) 13x = 13
c) 9x = -9
d) 3x = 15
e) 2x = 14
f) 4x = -12
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Answer 1

A) 7x = -21

x = -21/7

x = -3

B) 13x = 13

x = 13/13

x = 1

C)9x = -9

x = -9/9

x = -1

D)3x = 15

x=15/3

x=5

E)2x = 14

x = 14/2

x = 7

F) 4x = -12

x = -12/4

x = -3

Espero ter ajudado ;)