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人気のある Word Problems >

Fatima is 7 years older than her brother. Three times the sum of their ages is 39.:Write and solve an equation to find Fatima's age.

解

F a t ima i s 7 ye a rs o l d er t han h er b ro t h er . T h ree t im es t h e s u m o f t h e i r a g es i s 39. : W r i t e an d so l v e an e q u a t i o n t o f in d F a t im a^{'} s a g e .

解

Fatima^{'} s age is : 10

解答ステップ

Translate the problem into an equation:

3 (x + x - 7) = 39

x

を解く

3 (x + x - 7) = 39 : x = 10

Fatima^{'} s age is : 10

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