what is the answer to y=6+4x and y=-5x-21
y=4x+6y=-5x-214x+6=-5x-21add both sides by 5xalso subtract both sides by 69x=-27x=-3plu x=-3 in y=6+4xy=6-12y=-6
y=6+4x
y=-5x-21
=> 6+4x=-5x-21
9x=-27
x=-3
y=6+4*(-3)=6-12=-6
y=-6
Solution: (-3; -6)
