Question

como faço essa questão:

Answer 1

$x\neq \frac{-5}{2}$

$\frac{7x+16}{21} - \frac{x+8}{4x+10} - \frac{x}{3} = \frac{23}{70}$

$\frac{(4x+10)(7x+16)-21(x+8-7x(4x+10)}{21(4x+10)} = \frac{23}{70}$

$\frac{28x^{2}+64x+70x+160-21x-168-28x^{2}  -70x}{21(4x+10)} = \frac{23}{70}$

$\frac{43x-8}{21(4x+10)} = \frac{23}{70}$

$70(43x-8) = 483(4x+10)$

$3010x-560 = 1932x+4830$

$3010x-1932 = 4830+560$

$1078x = 5390$

$x = 5$