- Simplify ⇨ 19m + 14 - 3 (3m + 7)
Use the distributive property to multiply -3 by 3m+7.
Combine 19m and -9m to get 10m.
Subtract 21 from -14 to get -35.
12. One dekameter is equal to 1,000
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Using this information, we know that the third angle must be 180 - (22 + 22), since the angles in a triangle add up to 180