If: 8x+12x = 90 Then: 20x = 90 And: x = 4.5
4x+8x+3 = 12x+3
10x - 5y + 2x - 3y = 12x - 8y
8x = 120divide the equation by 8 8x/8 = 120/8 x = 15
I can't tell what sign is before 5y, so I'll assume +. 4x+5y=7. Double this is 8x+10y=14, triple is 12x+15y=21. etc
8x-1=23-4x 12x=24 x=2
To solve this, you should first write it as an equation (where 'x' is the unknown value):8x = 12Then you can solve for x:8x =12X = 12/8X=1.5
The GCF is 4x.
OK, SO 4x = 12x + 32.SO 4x -12x-12x-12x+32 (subtract 12x from each side to get x on one side)SO -8x = 32 (simplify)SO -1 (-8x) = 32 (-1) (multiply each side by -1)SO 8x -32 (simplify)SO 8x / 8 = -32/8 (divide each side by eight (8) to get ""X"" by itself)SO x= -4SO x = -4.Does that help?Hope that helps!
8x-3+6x-1 = 12x+614x-4 = 12x+614x-12x = 6+42x = 10x = 5
-4
If: 8x+12x = 90 Then: 20x = 90 And: x = 4.5
If the equasion is 12x+6-8x-4x-3+12 then the answer is 15.
Do you mean 8x2+12x+28?? If so, plug 8,12, and 28 into a,b, and c of this website http://www.math-booster.com/calculators/quadratic-formula.html the answer is imaginary or No Solution
4x+8x+3 = 12x+3
Subtract 7 from each side: 12x = 8x + 16Subtract 8x from each side: 4x = 16Divide each side by 4: x = 4
10x - 5y + 2x - 3y = 12x - 8y