\(\Leftrightarrow\dfrac{x+3}{2}-24,6=22,5\)
\(\Leftrightarrow\left(x+3\right)\cdot\dfrac{1}{2}=22,5+24,6=47,1\)
=>x+3=94,2
hay x=91,2
\(\left(\dfrac{3+x}{2}-24,6\right)\times3=7,5\)
\(\left(\dfrac{3+x}{2}-24,6\right)=7,5:3\)
\(\left(\dfrac{3+x}{2}-24,6\right)=2,5\)
\(\dfrac{3+x}{2}=2,5+24,6\)
\(\dfrac{3+x}{2}=27,1\)
\(\left(3+x\right):2=27,1\)
\(3+x=27,1\times2\)
\(3+x=54,2\)
\(x=54,2-3\)
\(x=51,2\)
`([3+x]/2-24,6)xx3=7,5`
`[3+x]/2-24,6=7,5:3=2,5`
`[3+x]/2=2,5+24,6=27,1`
`3+x=27,1xx2=54,2`
`x=54,2-3=51,2`
