(64m-3n)*7n*3m = 1344m2n - 63mn2
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original problem: (m-24+9)-(3m-7n-12) distribute the negative sign: (m-24+9)+(-3m+7n+12) collect like terms: -2m+7n-3 that is as far as you can simplify this problem without knowing the values of m and n
Multiply by 100
Product means to multiply so it would be 7n.
7n = 91n = 91÷7n = 13
Yes, 3m is equal to 30 dm. This is because there are 10 decimeters (dm) in a meter (m). Therefore, to convert meters to decimeters, you multiply by 10. In this case, 3m x 10 = 30 dm.