Example

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

Question

$$(-21)\times[(-4)+(-6)]=[(-21)\times(-4)+[(-21)\times40$$

Answer

[No Solution]

Solution


Remove parentheses.
Simplify  \(21\times -4\)  to  \(-84\).
Simplify  \(21\times 40\)  to  \(840\).
Remove parentheses.
No Solution
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