Question

X/5+X/3=8

X/4+X/3=7

3X+5+2X+6=X+27

2(X-3)+8X+4=5(X+2)

e pra amanhã me ajuda​

Answer 1

Resposta:

$\frac{x}{5} + \frac{x}{3} = 8 \\ 3x + 5x = 120 \\ 8x = 120 \\ x = \frac{120}{8} \\ x = 15$

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$\frac{x}{4} + \frac{x}{3} = 7 \\ 3x + 4x = 84 \\ 7x = 84 \\ x = \frac{84}{7} \\ x = 12$

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3x + 5 + 2x + 6 = x + 27

5x + 11 = x + 27

5x - x = 27 - 11

4x = 16

x = 16/4

x = 4

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2 ( x - 3 ) + 8x + 4 = 5 ( x + 2 )

2x - 6 + 8x + 4 = 5x + 10

10x - 2 = 5x + 10

10x - 5x = 10 + 2

5x = 12

x = 12/5

x = 2,4

Espero ter ajudado :)