Form 2 - Simple Polynomials (2)?

2015-10-08 7:43 am

There are 10a + 4b + 13c people at a stadium. 5a + 3b are men, 4a + 3b + 5c are women, and the rest are children. How many children are there?

回答 (1)

2015-10-08 8:05 am

✔ 最佳答案

children +5a + 3b +4a + 3b + 5c =10a + 4b + 13c

==>children =a-2b+8c

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