Question

(x+2)+x=9
x+(7+x)=11
x+2x-5=40
x+(4+x)+x=16

Answer 1

(x+2)+x=9x+2+x=9
2x=7
x=3.5

x+(7+x)=11
x+7+x=11
2x=4
x=2

x+2x-5=40
3x=35
x=7

x+(4+x)+x=16
3x=12
x=4
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