Me ajudem por favor! Preciso das contas.... Pergunta de ideia deBrunaK10

BrunaK10 @BrunaK10

January 2020 1 59 Report

Me ajudem por favor!

Preciso das contas

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exalunosp 15x - 45 + y = 180
12x - 15 + y = 180

15x - 45 = 12x - 15
15x - 12x = -15 + 45
3x = 30
x = 10 ****

15(10) - 45 + y = 180
12(10) - 15 + y = 180

150 - 45 + y = 180
120 - 15 = y = 180

y = 180 - 150 + 45
y = 75 ****

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