X equals -4 because if you pluged in 12 divided by -3 it equals -4.
3x-4x=12 that means -x equals 12 so x equals -12
15
19 (7 + 12 = 4x - 3x)
3x+12 = 18 3x = 18-12 3x = 6 x = 2
x=2 y=1.5
3x+12=x+48: 3x-x=-12+48 2x=36 x=18
3x=12 3x/3=12/3 x=4
39
3x=18 x=18/3 x=6
If x equals 8, then 3x equals 24. 24-x would equal 16.
3x plus -5 equal 7. so x is 4 so 3times 4 is 12-5 will equal 7.
x 5x-3x +6=-12, x 2x +6=-12,3x+6=-12, move the x and it's very easy 12/6=2 ...But the answer is negative so the x is equal to -2 and the answer is -12...I .