Question

resolva as seguintes equações do 1° grau!
10x+21-7=10+3x​

Answer 1

→ Cálculo :

${ \boxed{\begin{array}{lr} {10x+21-7=10+3x} \\\\{10x+14=10+3x}\\\\{10x-3x=10-14}\\\\{7x=-4}\\ \\ \boxed{\red{ x=-\frac{4}{7} }} \\ \end{array}}}$