A)-3(3x-42)=2(7x-52) B)4x-1=3x-3.... Pergunta de ideia deMonilenecosta13

August 2019 1 51 Report

A)-3(3x-42)=2(7x-52)
B)4x-1=3x-3

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Letuce Oieee

A )

-3 ( 3x - 42 ) = 2 ( 7x - 52 )

-9x + 126 = 14x - 104

-9x - 14x = - 104 - 126

-23x = - 230

x =
$\frac{230}{23} {. - 1}$
x = 10

B )

4x - 1 = 3x - 3

4x - 3x = - 3 + 1

x = - 2

Espero ter ajudado

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