Add 12 to each side: 4x + 6x = 20 ie 10x = 20 so x = 2
30 - 12 = 18
x2 + 6x + 9 = 81 x2 + 6x = 72 x2 + 6x - 72 = 0 (x+12)(x-6) = 0 x= -12, 6 (two solutions)
9x + 8 = 6x + 20(- 8 from both sides)9x = 6x + 12(- 6x from both sides)3x = 12(divide both sides by 3)x = 4
6x + 2 = 14 The solution: 6x + 2 = 14 6x +2 - 2 = 14 - 2 6x = 12 6x / 6 = 12 / 6 x = 2
-12-6x=12-10x we can add 12 to both sides, getting: -6x=24-10x then we can add 10x to both sides: 4x=24 divide both sides by 4: x=6 the answer is x equals 6.
6x+58=10x+14 first move the 58 to the other side by subtracting it. 6x=10x-48 Then you move the 10x to the other side by subtracting it. -4x=-48 Then you divide both sides by -4 x=12 is you answer.
6x - 3x = 5x - 10x + 12 6x - 3x - 5x + 10x = 12 8x = 12 8x/8 = 12/8 x = 12/8 = 3/2 x = 1.5
Add 12 to each side: 4x + 6x = 20 ie 10x = 20 so x = 2
10x-7=4x+5 +7 +7 10x=4x+12 -4x -4x 6x=12 /6 /6 x=2
It is: 10x+14 simplified
10x + 7 = 4x + 49 6x + 7 = 49 6x = 42 x = 6
8 = -6x x = -1.3333
X=7 y=5
x=-8
6x - 4y
-4x+3 = 23+6x -4x-6x = 23-3 -10x = 20 x = -2