Question

1) resolva as equações,sendo X um número racional:

A) 4x=28
B) 9x=-18
C) 5x=-20
D) 6x=48
E) 9x=-72
F) 7x=0
G) 12x=48
H) 10x=-150
I) 8x=-48
J) 35x=-105

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Answer 1

A) 4x=28 <=> x=28/4 <=> x=7

B) 9x=-18 <=> x=-18/9 <=> x=-9

C) 5x=-20 <=> x=-20/5 <=> x=-4

D) 6x=48 <=> x=48/6 <=> x=8

E) 9x=-72 <=> x=-72/9 <=> x=-8

F) 7x=0 <=> x=0

G) 12x=48 <=> x=48/12 <=> x=4

H) 10x=-150 <=> x=-150/10 <=> x=-15

I) 8x=-48 <=> x=-48/8 <=> x=-6

J) 35x=-105 <=> x=-105/35 <=> x=-3