Question

4- Ajude Joaquim resolver a seguinteequação: -2(x+6)-20= 3(2x-2) +20. O valor de x seria? *​

Answer 1

Resposta:

$-2(x+6)-20= 3(2x-2) +20\\\\-2x-32=6x+14\\\\-2x-32+32=6x+14+32\\\\-2x=6x+46\\\\-2x-6x=6x+46-6x\\\\-8x=46\\\\\frac{-8x}{-8}=\frac{46}{-8}\\\\x=-\frac{23}{4}$