X=-4
3x+5x-2x = 24 6x = 24 x = 4
If x=6 and y=8, then [ 5x + 8y ] = 5(6) + 8(8) = 30 + 64 = 94
4x-7=5x-2 x=-5
X=5
8x + 30 = 5xSubtract 30 from each side:8x = 5x - 30Subtract 5x from each side:3x = -30Divide each side by 10:x = -10
x equals 6 5 times 6 equals 30
30 + 5x = 15 + 10x 30 = 15 + 5x 15 = 5x x = 3
x = 31
39 = 5x + 9 5x = 39 - 9 5x = 30 x = 30 / 5 x = 6
x-5x=4.5 -4x=4.5 x=-1.125
x = 5.4
-8
6
X=-4
5x + 20 = 4x +30 5x - 4x = 30 - 20 x = 10
30