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livelaughlove
how do you solve x+y=4 x-y=-8 solving it as a linear equation using addition?
x and y are 2 for x-y=4 x is 10 and y is 2 for x-y=8
simultaneous equations add both equations to get rid of the y's in this question 2x = -4 x=-2
Subs in any of the two equations to get y -2+y=4 in first equation y=6