Question

Resolva as equações,usando as operações opostas

ME AJUDEM PFV ​

Answer 1

Resposta:

x¹=-45 x²=21 x³=-12

Explicação passo-a-passo:

$\frac{2x}{5} =-18 \\\\2x=-18*5\\\\2x=-90\\\\x=\frac{-90}{2} \\\\x=-45\\\\\\\frac{x}{3}=7\\\\x=7*3\\ \\x=21\\\\\\\frac{x}{4}=-3\\\\x=-3*4\\\\x=-12$