2x = 4x +1
2x-4x = 1
-2x = 1
x = - 1/2
check
Leftside = 2 (- 1/2)
= -1
Right side = 4 (- 1/2) +1
= -2 + 1
= 1 - 2
= -1
LS = RS therefore x = - 1/2
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2x + 2x + 146 + 26 = 172 4x + 172 = 172 4x = 0 x = 0
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)
2x+4-x = 4x-5 2x-x-4x = -5-4 -3x = -9 x = 3
4x + 2 + 2x - 2x = 14 4x = 14 - 2 4x = 12 x = 3