13-2x+7-12x=5a-28+30-12a=упростите уравнение ​

Question

13-2x+7-12x=5a-28+30-12a=упростите уравнение ​

Answer 1

13 - 2x + 7 - 12x = -2x - 12x + 7 + 13 = -14x + 20 = 20 - 14x

5a - 28 + 30 - 12a = 5a - 12a - 28 + 30 = -7a + 2 = 2 - 7a