Question

9) Determine x
a) 6x = 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
4x7= 8x - 2 2
g) 2x + 1 = 4x - 7
h) 9x + 9 + 3x = 15
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Answer 1

Resposta:

Explicação passo-a-passo:

a) 6x = 2x + 16

6x - 2x = 16

4x = 16

X = 16/4

X = 4

____________

b) 2x - 5 = x + 1

2x - x = 1+5

X = 6

_________

c) 2x + 3 = x + 4

2x - x = 4-3

X = 1

______________

d) 5x + 7 = 4x + 10

5x - 4x = 10-7

X = 3

_____________

e) 4x - 10 = 2x + 2

4x - 2x = 2+10

2x = 12

x = 12/2

x = 6

-----------------------

f) 4x - 7 = 8x - 2

-7+2= 8x - 4x

-5= 4x

4x = - 5

X = - 5/4

_________

g) 2x + 1 = 4x - 7

1+7= 4x - 2x

8 = 2x

2x = 8

X = 8/2

X = 4