x = 4 and y = 0
How do you solve 4y plus x equals 8
You need three independent equations to solve for three unknown variables.
2x + 3y = 17 3x + 4y = 24 (2x + 3x) + (3y + 4y) = (17 + 24) 5x + 7y = 41
2x+4y = -8 4y = -2x-8 y = -1/2x-2 or y = -0.5x-2
x = 4 and y = 0
2y = 4x + 4y = 2x + 2
How do you solve 4y plus x equals 8
You need three independent equations to solve for three unknown variables.
2x + 3y = 17 3x + 4y = 24 (2x + 3x) + (3y + 4y) = (17 + 24) 5x + 7y = 41
2x+4y = -8 4y = -2x-8 y = -1/2x-2 or y = -0.5x-2
-8x + 4y = 28 Add 8x to each side: 4y = 8x + 28 Divide both sides by 4: y = 2x + 7
(-1, 5)
(-1, 5)
(1, 1)
22
2x + 4y = 12 ie 4y = 12 - 2x so y = 3 - x/2 Test: take x as 8 so y = -1: 2 x 8 + 4 x -1 does indeed = 12.