28=8x+12-7x 28=8x-7x+12 28=x+12 28-12=x+12-12 16=x
It is 7+8x simplified
8x - 2 = -9 + 7x Subtract 7x from both sides: x - 2 = -9 Add 2 to both sides: x = -7
It is: x-1+4+7x-3 = 8x simplified
-11
-8x+7 = -7x-2 -8x = -7x-2-7 -8x=-7x-9 -8x+7x=-9 -1x=-9 x=-9/-1 x=9
8x=7x-7 x=-7
Do you mean 6x+7x-8x if so it is 5x because 13x-8x = 5x
4x(x2 - 2)
It is: 7x
28=8x+12-7x 28=8x-7x+12 28=x+12 28-12=x+12-12 16=x
8x-2 = -9+7x8x-7x = -9+2x=-7
If you mean: 8x-2-9+7a Then it simplifies to: 15a-11
7x+x = 8x
It's a simple linear equation in 'x'. The 'solution' is the number that 'x' must be, inorder to make it a true statement. There's only one solution. Here's how to find it:8x + 2 = -9 + 7xSubtract 2 from each side:8x = -11 + 7xSubtract 7x from each side:x = -11
x = 4 You have to add the 8x and 7x to get 15x and then divide 60 by 15 to get x by itself.
If you mean: 5x(3x+2)-8x-7x then the expression can be simplified to 15x^2 -5x