-4x + 5 + 3x + 6 = -x + 11
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(2x + 5) + (5x - 6) + (-4x + 2) = 3x + 1 There are three items so average = (3x + 1)/3 = x + 1/3
this is what you would: 4x+6=3x-1 -6 -6 ---- 4x=3x-7 -3x -3x ---- 1x=-7 ---- x=-7
It is equivalent to: 3x+6+5 = 3x+11
x2 + x + 6
3x + 8 = 4x + 23x - 4x = 2 - 8-x = -6x = 6