-12
-9
If you mean: 3x-9 = 12 then the value of x is 7
6x - 12 = 3x + 15 3x = 27 x = 9
x . 9 =12-3x9x =12-3x9x+3x=1212x =12x =1
12
9
-5x + y = -12- 3x + 6y = -12Since both of expressions have a value of -12, their sum is - 24. This is true only whenx = 20/9 and y = -8/9.-5x + y = -12y = 5x - 12- 3x + 6y = -12-3x + 6(5x - 12) = -12-3x + 30x - 72 = -1227x = 60x = 60/27x = 20/9y = 5x - 12y = 5(20/9) - 12y = 100/9 - 12y = (100 - 108)/9y = -8/9
4x - 9 = 7x + 12 Subtract 4x from both sides: -9 = 3x + 12 Subtract 12 from both sides: -21 = 3x Divide both sides by 3: x = -7
What is x in 3x-9 EQUALS 27? X= 36 THIS IS THE WORK: 27 + 9= 36 36/3= 12 :)
-9
12+3(y) 12+ 3(-3) 12 + {3x (-3)} 12+ (-9) 12-9 3