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140=20\times 5+3\times 5
Multiply 35 and 4 to get 140.
140=100+15
Multiply 20 and 5 to get 100. Multiply 3 and 5 to get 15.
140=115
Add 100 and 15 to get 115.
\text{false}
Compare 140 and 115.
Examples
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Linear equation
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Matrix
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Simultaneous equation
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Differentiation
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Limits
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