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Anonymous
(x + 4) + (x + 5) = 2x + 9
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x + 5 + 4 = x + 9
If you mean: x+4(x+5) then it is 5x+20
3 plus 4 x plus 5 31 when simplified would give x = 23/4.
x+4x+5=5x+5
x= 1.67(rnd) 5= -4+3x+4 5- -4= 9 9=3x+4 9-4=5 5=3x x= 1.67(rnd)