Question

tim x biet 2.(x+1)-3.(x+2)=10

Answer 1

\(2\left(x+1\right)-3\left(x+2\right)=10\Leftrightarrow2x+2-3x-6=10\)

\(\Leftrightarrow-x-4=10\Leftrightarrow x=-4-10=-14\) vậy \(x=-14\)

Answer 2

\(2\left(x+1\right)-3\left(x+2\right)=10\Rightarrow2x+2-3x=10\)

\(\Rightarrow\left(-x\right)-4=10\Rightarrow\left(-4\right)-10=\left(-14\right)\)

Vậy ...........

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