Question

matemática preciso do cálculo:

$\frac{3(x + 4)}{14} + \frac{2(2x + 1)}{7} = 9$
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Answer 1

Resposta:

3*(x+4)/14  +2*(2x+1)/7 = 9

## tudo vezes 14

14*3*(x+4)/14  +14*2*(2x+1)/7 = 14* 9

3*(x+4)  +4*(2x+1) = 14* 9

3x+12 +8x +4=14*9

11x +16=14*9

11x =14*9-16

11x =110

x=110/11

x=10

Answer 2

Explicação passo-a-passo:

$\dfrac{3(x + 4)}{14} + \dfrac{2(2x + 1)}{7} = 9$

$\dfrac{3x + 12}{14} = \dfrac{4x + 2}{7} = 9$

$3x + 12 + 2(4x + 2) = 126$

$3x + 12 + 8x + 4 = 126$

$3x + 8x + 12 + 4 = 126$

$11x + 16 = 126$

$11x = 126 - 16$

$11x = 110$

$x = \dfrac{110}{11}$

x=>10