Answer:
Part 1 :
solve for y in 2x + y = 19:
y = 19 - 2x
substitute y = 19 - 2x into 3x - 3y = 33:
9x - 57 = 33
solve for x in 9x - 57 = 33:
x = 10
substitute x = 10 into y = 19 - 2x:
y = -1
Therefore,
x = 10
y = -1
Part 2 :
solve for x in -4x - 2y = -12: x = 6 - y / 2
substitute x = 6 - y / 2 into 2x + 4y = -12: 6 + 3y = -12
solve for y in 6 + 3y = - 12: y = -6
substitute y = -6 into x = 6 - y / 2: x = 6
Therefore,
x = 6
y = -6
Part 3:
solve for x in -6x + 6y = 6: x = y - 1
substitute x = y - 1 into -6x + 3y = -12: -3y + 6 = -12
solve for y in -3y + 6 = -12: y = 6
substitute y = 6 into x = y - 1: x = 5
Therefore,
x = 5
y = 6
the answer above this is incorrect. btw, sorry if its late or anything, also can i get brainliest if you dont care?
