14m+m+17m−9m if m=30

1 answer:

NikAS [45]3 years ago

4 0

Answer:

690

Step-by-step explanation:

Put 30 where m is in the expression and do the arithmetic. Or, simpify the expression first, then do the same.

14·30 +30 +17·30 -9·30 = 420 +30 +510 -270 = 690

Simplifying first, you have ...

14m +m +17m -9m = m(14 +1 +17 -9) = 23m

23·30 = 690

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