2x+a=p 2x=p-a x=.5p-.5a
2x+8=10... Subtract 8 on both sides, then devide by 2... 2x=2... x=1
you need 2 equations to solve for 2 variables
many solutions
y=4x-8y=2x+10Substitute (4x-8) for y in the second equation and solve for x:4x-8=2x+102x=18x=9Now solve for y:y=4(9)-8=28(9,28)
x=35
4x=-10 x=-2.5
2x+a=p 2x=p-a x=.5p-.5a
2x+8=10... Subtract 8 on both sides, then devide by 2... 2x=2... x=1
y= -2x
5x+7 = 2x-3 5x-2x = -3-7 3x = -10 x = -10/3
3
you need 2 equations to solve for 2 variables
2x - 4 = -10 2x = -10 +4 2x = -6 x = -3
8
many solutions
y=4x-8y=2x+10Substitute (4x-8) for y in the second equation and solve for x:4x-8=2x+102x=18x=9Now solve for y:y=4(9)-8=28(9,28)