Question

Calcule o valor de X
a)X+101=300
b)x-279=237
c)x-8= -10
d) 35x= -105
e)7x=14
f)12x= -48
g)6x=2x+28
h)2x+6=X+18
i)5x-23=2+9
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Answer 1

a) X + 101 = 300

X = 300 - 101

X = 199

b) X - 279 = 237

X = 237 + 279

X = 516

c) X - 8 = -10

X = -10 + 8

X = -2

d) 35x = -105

X = -105 ÷ 35

X = - 3

e) 7x = 14

X = 14 ÷ 7

X = 2

f) 12x = -48

X = -48 ÷ 12

X= -4

g) 6x = 2x + 28

6x -2x = 28

4x = 28

X = 28 ÷ 4

X = 7

h) 2x + 6 = X + 18

2x -X = 18 - 6

X = 12

i) 5x -23 = 2 + 9

5x -23 = 11

5x = 11 + 23

5x = 34

X = 34 ÷ 5

X = 6,8