Question

solve each system by the addition method 4x+2y=6 4x-5y=-1 put your answer in ordered pair (x,y)

Answer 1

hint: multiply either of them by -1
\(\large {
\begin{array}{rlcll}
4x+2y=6&&4x+2y=6\\
4x-5y=-1 &{\color{red}{ \times -1}}\implies &\cancel{ -4x}+5y=1
\\\hline\\
&&\square?+\square ?=\square ?
\end{array}
}\)

Answer 2

\(\large {
\begin{array}{rlcll}
4x+2y=6&&\cancel{ 4x}+2y=6\\
4x-5y=-1 &{\color{red}{ \times -1}}\implies &\cancel{ -4x}+5y=1
\\\hline\\
&&\square?+\square ?=\square ?
\end{array}
}\)

to be exact, anyhow