Question

what is the solution to the following system of equations (3x-4y=-25)( 3x+ 4y=5)? PLEASE HURRY!!!!!!!!!!!

Answer 1

`\underline{+\left\{\begin{array}{ccc}3x-4y=-25\\3x+4y=5\end{array}\right}\\.\ \ \ \ \ \ 6x=-20\ \ \ \ |:6\\\\x=-(20)/(6)\\\\x=-(10)/(3)`
substract the value of x to the second equation:

`3\cdot\left(-(10)/(3)\right)+4y=5\\\\-10+4y=5\ \ \ |+10\\\\4y=15\ \ \ \ |:4\\\\y=(15)/(4)`

`\left\{\begin{array}{ccc}x=-(10)/(3)\\\\y=(15)/(4)\end{array}\right`