Question

ecuaciones, usar propiedad distributiva

a) 2.(x+5)-3x = x+18

b) 3x+5.(1+2x) = 10.(x-2)

c) 3x-12:3+2+3.(x-1) = 19

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Answer 1

Respuesta:

a) 2x+10-3x = x+18

2x-3x+x = 18-10

x=8

b) 3x+5+10x = 10x-20

3x+10x-10x = -20-5

3x = -25

x = -25/3

x= 8.33

c) 3x-4+2+3x-3 = 19

3x+3x = 19+4-2+3

6x = 24

x = 24/6

x= 4