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kkurt [141]
3 years ago
12

How to factor 21-7t+3r-rt

Mathematics
1 answer:
Xelga [282]3 years ago
8 0
21- 7t + 3r - rt 
<span>Group: </span>
<span>(21- 7t) + (3r - rt) </span>
<span>Factor out the common factors: </span>
<span>7 (3 - t) + r (3 - t) </span>
<span>Use the distributive property: </span>
<span>(3 - t) (7 + r) </span>
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