Question

a) 2x+3(-x+1)=5
b) -b+3=b
c) -x=3x-5​

Answer 1

Resposta:

a) 2x+3(-x+1)=5

2x + 3 - x = 5

2x - x = 5 - 3

x = 2

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b) -b+3=b

3 = b + b

3 = 2b

1,5 = b

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c) -x=3x-5

-x - 3x = -5

-4x = -5

-x = -1,25

x = 1,25