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Phổ biến >

kathy is 7 years younger than brian. the sum of their ages is 84 how old is brian

Lời Giải

kathy is 7 years younger than brian. the sum of their ages is 84 how old is brian

Lời Giải

Brian^{'} s age is : 45 \frac{1}{2}

Các bước giải pháp

Translate the problem into an equation:

x + x + 7 = 84

Giải

x, x + x + 7 = 84 : x = \frac{77}{2}

Tìm Brian's age

: 45 \frac{1}{2}

Brian^{'} s age is : 45 \frac{1}{2}

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