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AFS9
@AFS9
April 2022
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equação
de 1grau com fração
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joaow18
X / 5 + x / 2 = 7 / 10 ; mmc 2,5,10 = 10
divide pelo denominador e multiplica pelo numerador.
(10 / 5) · x + (10 / 2) · x = (10 / 10) · 7
2·x + 5·x = 1·7
7x = 7
x = 7 / 7
x = 1
x / 5 + 1 = 2x / 3 ; mmc 3,5 = 15
(15 / 5) · x + (15 / 1) · 1 = (15 / 3) · 2x
3·x + 15 ·1 = 5·2x
3x - 10x = - 15
-7x = -15 · (-1)
7x = 15
x = 15 / 7
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Lista de comentários
divide pelo denominador e multiplica pelo numerador.
(10 / 5) · x + (10 / 2) · x = (10 / 10) · 7
2·x + 5·x = 1·7
7x = 7
x = 7 / 7
x = 1
x / 5 + 1 = 2x / 3 ; mmc 3,5 = 15
(15 / 5) · x + (15 / 1) · 1 = (15 / 3) · 2x
3·x + 15 ·1 = 5·2x
3x - 10x = - 15
-7x = -15 · (-1)
7x = 15
x = 15 / 7