3x
y=-10x-4
7x+y=6
10 + y = 4y = 4 - 10 y = -6
16
y = -1x/2 3x + 6y = 0 -3x -3x __________ 6y = 0 - 3x --- -------- 6 6 y= -3x/6 y= -1x/2
3x
1+1+x+x+x+y+y=2+3x+2y
-1
If y=.1x+3, then .1x = y - 3. Multiply both sides by ten and x = 10y - 30.
-1 plus 1 = 0 plus 1 =1
y = 6
x = -4 and y = 2
x = 2y = 4
y = -71
The solution is (x, y, z) = (2.5, 1, 2.5).
3x+y=6