Example

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

Question

$$1,35+2,65-(3,5 \frac{ . }{ . } 0,7)+2 \times (0,35+3,65)-4$$

Answer

1,37,61-(3,0,7)+(0,38,65)

Solution


Cancel \(.\).
\[1,35+2,65-(3,0,7)+2\times (0,35+3,65)-4\]
Simplify  \(35+3\)  to  \(38\).
\[1,35+2,65-(3,0,7)+2\times (0,38,65)-4\]
Simplify  \(2\times (0,38,65)\)  to  \(2\times 0,38,65\).
\[1,35+2,65-(3,0,7)+(2\times 0,38,65)-4\]
Simplify  \(2\times 0\)  to  \(0\).
\[1,35+2,65-(3,0,7)+(0,38,65)-4\]
Simplify  \(35+2\)  to  \(37\).
\[1,37,65-(3,0,7)+(0,38,65)-4\]
Simplify  \(65-(3,0,7)\)  to  \(65-(3,0,7)\).
\[1,37,61-(3,0,7)+(0,38,65)\]
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