+1904 \(51=7+4\times\sqrt{x}\)
\(51-7=7-7+4\times\sqrt{x}\)
\(44=7-7+4\times\sqrt{x}\)
\(44=0+4\times\sqrt{x}\)
\(44=4\times\sqrt{x}\)
\(\frac{44}{4}=\frac{4\times\sqrt{x}}{4}\)
\(11=\frac{4\times\sqrt{x}}{4}\)
\(11=1\times\sqrt{x}\)
\(11=\sqrt{x}\)
\({11}^{2}={\sqrt{x}}^{2}\)
\(121={\sqrt{x}}^{2}\)
\(121=x\)
\(x=121\)
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