Question

a) 3(6+x)=2(x-6)
b) 2(4-x)+10x= 40
c) 5x-10+12x-60 = 15x-60
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Answer 1

Respuesta:

a) x = - 30

b) x = 4

c) x = 5

Explicación paso a paso:

a)

3(6 + x) = 2(x - 6)

18 + 3x = 2x - 12

3x - 2x = -12 - 18

x = - 30

b)

2(4 - x) + 10x = 40

8 - 2x + 10x = 40

8x = 40 - 8

8x = 32

x = 32 / 8

x = 4

c)

5x - 10 + 12x - 60 = 15x - 60

17x - 70 = 15x - 60

17x - 15x = -60 + 70

2x = 10

x = 10 / 2

x = 5