Question

Решите уравнение 2/3(x-3)-3/5(x-10)=5

Answer 1

2/3(х - 3) - 3/5(х - 10) = 5
2/3х - 2 - 3/5х + 6 = 5
10/15х - 9/15х = 5 + 2 - 6
1/15х = 1
х = 1 : 1/15 
х = 1 * 15/1
х = 15
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Проверка: 2/3(15-3) - 3/5(15-10) = 5
                  2/3 * 12 - 3/5 * 5 = 5
                  8 - 3 = 5
                  5 = 5