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A good helper in the sixth grade of mathematics 4 1 page
The number A is a, 2 less than the number B, and the sum of the number A and the number B is (A-2+A).

There are x tons of sand in a construction site, 2.5 tons are used every day, and there are (X-2.5B) tons left after using it for b days.

A farm has two paddy fields, the first one is one square meter, and the average rice yield per square meter is m kilograms.

The second plot is b square meters, with an average yield of N kilograms of rice per mu.

AM stands for the number of the first batch of local rice.

BM stands for the second batch of locally grown rice.

AM+BN represents the rice yield of two plots.

Have you got the wrong question? It should be AM+BN, not AM+BM! ! !