Mathematics
YouveBeenLokid
4

Help solve mathematics question, please. Photo.

+0
(1) Answers
shandi31

Hi Mark 3x+y=42x+y=5Solve 3x+y=4 for yAdd -3x to both sides 3x+y-3x=4-3xy=-3x+4Substitute -3x+4 for y in 2x+y=52x+y=52x-3x+4=5Simplify both sides of the equation -x+4=5Add -4 to both sides -x+4-4=5-4-x=1Divide both sides by -1-x/-1= 1/-1x=-1Substitute -1 for x in y=-3x+4y=-3x+4y=(-3)(-1)+4Simplify both sides of the equation y=7Answer: (-1,7) I hope that's help ! Have a great weekend :)

Add answer