3 years ago

Substitution for y=4x+6 -5x-y=21

Mathematics

1 answer:

Sergio039 [100]3 years ago

4 0

I have included a picture. In the picture you will find the work and final answer.

You might be interested in

"If Jason reads7 1/2 pages in 1/4 hour, what is his average reading rate in pages per hour?

Paul [167]

The answer would be 30 pages

7 0

3 years ago

Read 2 more answers

What is the answer to -5x+7y=11<br> -5x+3y=19

marusya05 [52]

$\left\{\begin{array}{ccc}-5x+7y=11\\-5x+3y=19&/\cdot(-1)\end{array}\right\\+\left\{\begin{array}{ccc}-5x+7y=11\\5x-3y=-19\end{array}\right\\-------------\\.\ \ \ \ \ \ \ \ 4y=-8\ \ \ \ |divide\ both\ sides\ by\ 4\\.\ \ \ \ \ \ \ \ \ y=-2\\5x-3(-2)=-19\\5x+6=-19\\5x=-19-6\\5x=-25\ \ \ \ \ |divide\ both\ sides\ by\ 5\\x=-5\\\\Answer:x=-5\ and\ y=-2$