Question

Nao entendi essa questao por favor podem me ajudar ?

Answer 1

Resposta:

19, 15, 27

Explicação passo-a-passo:

(1°) $\dfrac{4x}{5}-\dfrac{6x+13}{10}=\dfrac{5}{2}$

$8x-6x-13=25$

$8x-6x=25+13$

$2x=38$

$x=\dfrac{38}{2}$

$x=19$

(2°) $2x+945=65x$

$65x-2x=945$

$63x=945$

$x=\dfrac{945}{63}$

$x=15$

(3°) $18x+79=95x-2000$

$95x-18x=79+2000$

$77x=2079$

$x=\dfrac{2079}{77}$

$x=27$