Why can't you solve that math problem in the third grade in Vietnam? Seeking answers?
2.？ 5.1.2.1.3.1. 2.5. 1.2. 1.2.4.2.。 . . It depends on the problem. He said multiply and divide first and then add and subtract. That's it. Y+13× y \ y+y+12× y-y+y× y-10 = 66. Let the space be y and decompose it into (y+y-y-10).