Example

3(r+2s)=2t-4
a⋅(b-2)=3b
3(r+2s)=2t-4
a⋅(b-2)=3b

Question

$$\left. \begin{array} { l } { 140 \div 14 + } \\ { 55 \times 8 - 72 } \\ { \times 7 + 16 + 4 } \\ { + 8 \times 2 } \end{array} \right.$$

Answer

140-14+440-72;*7+16+Y;8*2

Solution


Simplify  \(55\times 8\)  to  \(440\).
\[\begin{aligned}&140-14+440-72\\&\times 7+16+Y\\&8\times 2\end{aligned}\]
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