-15 = 6x + 3 - 3-15 = 6x (3 - 3 = 0)-2.5 = x (-15/6)
5x+15 = 6x-10 5x-6x = -10-15 -x = -25 x = 25
x=3 becaus: 6x=x+15 5x=15 (-x) x=3 (divided by 5)
x=4/3
6x - 3y = 6 y= 2x + 5 replace 2x + 5 for y into the first equation 6x - 3y = 6 6x - 3(2x + 5) = 6 6x - 6x - 15 = 6 0 - 15 = 6 -15 = 6 False So the system has no solution.
x+15+(-15)=6x+(15+(-15)=6x+(15-15)=6x+(0)=6x+0=6Add/subtract 0 from both sides,x=6
9x+6 = 6x+15 9x-6x = 15-6 3x = 9 x = 3
-15 = 6x + 3 - 3-15 = 6x (3 - 3 = 0)-2.5 = x (-15/6)
5x+15 = 6x-10 5x-6x = -10-15 -x = -25 x = 25
x=3 becaus: 6x=x+15 5x=15 (-x) x=3 (divided by 5)
x=4/3
It is: y = 5x+15
6x-x+15-9= 6x-x=5x 15-9=6 5x+6=0 5x=-6 x=-1.2
11
6x - 3y = 6 y= 2x + 5 replace 2x + 5 for y into the first equation 6x - 3y = 6 6x - 3(2x + 5) = 6 6x - 6x - 15 = 6 0 - 15 = 6 -15 = 6 False So the system has no solution.
(9,6)
6x+x = 7x