Question

Determine x:
a) x = 2x + 16
b) 2x − 5 = x + 1
c) 2x + 3 = x + 4
d) 5x + 7 = 4x + 10

e) 4x − 10 = 2x + 2
f) 4x − 7 = 8x − 2
g) 2x + 1 = 4x − 7
h) 9x + 9 + 3x = 15


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Answer 1

Explicação passo-a-passo:

a) x - 2x = 16

-1x = 16

b) 2x - x = 1 + 5

x = 6

c) 2x - x = 4 - 3

x = 1

d) 5x - 4x = 10 - 7

x = 3

e) 4x - 2x = 2 + 10

2x = 12

x = 12/2

x = 6

f) 4x - 8x = - 2 + 7

-4x = 5

-x = 5/4

-x = -1,25

g) 2x - 4x = - 7 - 1

-2x = -8

-x = -8/-2

-x = -4

h) 9x + 3x = 15 - 9

12x = 6

x = 6/12

x = 0,5