Question

1) Resolva as equações:
a) 3x-5x= -80
b)5 (x -4)=4(x+6)
c)5y+3y= -64
d)z+z=130

Answer 1

Olá!!!


a) 3x - 5x = -80

-2x = -80
x = -80/-2
x = 40

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b) 5.(x - 4) = 4.(x + 6)

5x - 20 = 4x + 24
5x - 4x = 24 + 20
x = 44

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c) 5y + 3y = -64

8y = -64
y = -64/8
y = -8

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d) z + z = 130

2z = 130
z = 130/2
z = 65



★Espero ter ajudado! tmj.