3.Решите уравнения:
а) 42x+19x-16=1448 б) 936÷(8x-17)=24

а)

42x+19x-16=1448

61x - 16 = 1448

61x = 1448 + 16

61x = 1464

x = 1464 : 61

x = 24

б)

936÷(8x-17)=24

8x-17 = 936 : 24

8x-17 = 39

8x = 39 + 17

8x = 56

x = 56 : 8

x = 7

а) 42x + 19x - 16 = 1448

61x - 16 = 1448

61x = 1448 + 16

61x = 1464

x = 24

б) 936 : (8x - 17) = 24

8х-17 = 936/24

8х-17 = 39

8х = 39+17

8х = 56

х = 56/8

х = 7