Question

A soluçao da equaçao X.[1+2(3-1)]=4×-7

Answer 1

$\Large\boxed{\begin{array}{l}\sf x\cdot[1+2(3-1)]=4x-7\\\sf x\cdot[1+2\cdot2]=4x-7\\\sf x\cdot[1+4]=4x-7\\\sf 5x=4x-7\\\sf 5x-4x=-7\\\sf x=-7\end{array}}$