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Question

Solve the following equation:
x+3+x+4=x+2+x+7

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Solution

Squaring on both sides
2x+7+2(x2+7x+10)=2x+9+(x2+9x+14)
Simplifying and squaring again
x2+7x+10 =(x2+9x+15)+2(x2+9x+14)
2x+5=2(x2+9x+14)
Squaring on both sides
4x2+20x+25=4x2+36x+56
x=1.9 (approx)

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