3x + 2y = 12 ie 2y = 12 - 3x so y = 6 - 3x/2
y-3x+6y=12 7y=3x+12 y=3x/7 +12/7
You cannot solve one linear equation in two unknown variables.
3x - 2 = 2x + 4 3x - 2x = 4 + 2 x = 6
7x+6 = -3x-24 7x+3x = -24-6 10x = -30 x = -3
4+3x-27=-12 To solve it... 3x= -12-4+27 3x= 11 x= 11/3 x= 3.666
23
x=7
x = -8
3
x2 plus 3x plus 3 is equals to 0 can be solved by getting the roots.
You do not have enough information to solve this problem. More accurately, you do not have enough information to assign a numeric value to z. However, abstractly, you could say that z=27-3x-4y.
-3x + 5 = 20 -3x = 15 x = -5
3x + 2y = 12 ie 2y = 12 - 3x so y = 6 - 3x/2
x = 6
x = -8
7x = 3x - 12 4x=-12 x=-3