1.5
If: 2x-3y = -15 and x = 4y Then: x = -12 and y = -3
X = 135 and y = 15 Solved by addition and substitution
If you mean: x^2+15-3x then its value is 19 when x equals 4
x=100
4x-2y = 6 -7x+2y = -15 Add both equations together in order to eliminate y: -3x = -9 Divide both sides by -3 in order to find the value of x: x = 3 Substitute the value of x into the original equations to find the value of y: Solution: x = 3 and y = 3
5
15
13 ? 15
If: 2x-3y = -15 and x = 4y Then: x = -12 and y = -3
x/5 = 3 Multiply both sides by 5 to find the value of x:- x = 15
If y equals 5x-15 and x equals 1 then the value of y comes out to be -10. So y equals 5x-15 is -10.
X = 135 and y = 15 Solved by addition and substitution
If you mean: x^2+15-3x then its value is 19 when x equals 4
18
15 (x = 135)
find x+x+x when x=15 15+15+15=45
8