mikey63561 mikey63561

26-02-2024
Mathematics

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21 students are at the school picnic. Then 42 more students join them. Later, 30 students leave. Which equations show a way to solve the problem?
A 42-21=21
30-21=9
B 21+42=63
63-30=33
C 42+21=63
63+30=93
D 42-21=21
30+21=51

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