Question

Упростите выражения 2 ( y - 1 ) - 2y + 12 = 16 + 3 ( 2 - 3y ) + 8y = 3 - 17a - 11 ( 2a - 3 ) = 15 - 5 ( 1 - a ) - 6a =

Answer 1

2у -3 -2у +12 = 9
16 + 6- 9у + 8у = 22 -у
3- 17а - 22а +33 = 36 - 39а
15 -5 + 5а - 6а = 10 - а

Answer 2

2(y - 1) - 2y + 12 = 16 3(2 - 3y) + 8y = 3 -17a - 11(2a - 3) = 15 -5(1 - a) - 6a

First, let's simplify each expression step by step:

1) 2(y - 1) - 2y + 12 = 16 2y - 2 - 2y + 12 = 16 -2 + 12 = 16 10 = 16 (This equation has no solution)

2) 3(2 - 3y) + 8y = 3 6 - 9y + 8y = 3 6 - y = 3 - y = 3 - 6 - y = -3

3) -17a - 11(2a - 3) = 15 -17a - 22a + 33 = 15 -39a + 33 = 15 -39a = 15 - 33 -39a = -18 a = -18 / -39 a = 2/3

4) -5(1 - a) - 6a -5 + 5a - 6a -5a - 5 -5(a + 1)

So, the solutions to the given expressions are: - y = -3 - a = 2/3