Question

Simplifique e resolva as equações, considere U=Q:
a)4 x = 24
b) x – 15 = 69
c) 2 x + 4 = - 64
d)2x – 5 = 15
e)- 4x = - 164
f)x + 5 = 12

Answer 1

a) 4x = 24

x = 24/4 = 6

b) x - 15 = 69

x = 69 + 15 = 84

c) 2x + 4 = -64

2x = - 64 - 4

x = - 68/2 = - 34

d) 2x - 5 = 15

2x = 15 + 5

x = 20/2 = 10

e) -4x = -164

x = -164/-4 = 41

f) x + 5 = 12

x = 12 - 5

x = 7