7(5x − 4) = 2(16x + 1) 35x − 28 = 32x + 2 35x − 32x = 2 + 28 3x = 30 x = 30 : 3 = 3

3(17 + y) = 2(4y + 33) 51 + 3y = 8y + 66 3y − 8y = 66 − 51 −5y = 15 y = 15 : −5 y = −3