Решите уравнения срочно надо d + 1/5 = 4/7 + 3/7 f + 4/5 = 4/7 + 3/7 b + 2/5 = 4/7 + 3/7...

Question

Решите уравнения срочно надо
d + 1/5 = 4/7 + 3/7
f + 4/5 = 4/7 + 3/7
b + 2/5 = 4/7 + 3/7
например 3/3 это я так зделал дробь

Answer 1

D + 1/5 = 4/7 + 3/7
d + 1/5 = 7/7
d + 1/5 = 1
d = 1 - 1/5
d = 5/5 - 1/5
d = 4/5
------------------
4/5 + 1/5 = 4/7 + 3/7
5/5 = 7/7
1=1


f + 4/5 = 4/7 + 3/7
f + 4/5 = 7/7
f + 4/5 = 1
f = 1 - 4/5
f = 5/5 - 4/5
f = 1/5
----------------------------
1/5 + 4/5 = 4/7 + 3/7
5/5 = 7/7
1 = 1

b + 2/5 = 4/7 + 3/7
b + 2/5 = 7/7
b + 2/5 = 1
b = 1 - 2/5
b = 5/5 - 2/5
b = 3/5
--------------------------------
3/5 + 2/5 = 4/7 + 3/7
5/5 = 7/7
1 = 1

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