Question

Choose the correct first step(s) to solve the system using elimination. 4x + 7y = 6 and 6x + y = 2

Answer 1

$\left\{\begin{array}{ccc}4x+7y=6\\6x+y=2&|multiply\ both\ sides\ by\ (-7)\end{array}\right\\\\\underline{+\left\{\begin{array}{ccc}4x+7y=6\\-42x-7y=-14\end{array}\right}\\.\ \ \ -38x=-8$