Question

1001. Решите уравнение:
1) 8(х – 1,4) = 0,56;
2) (4,6 - x) : 19 = 4,18;
3) (51,32 + х) - 0,12 = 72;
4) 17,28 : (56 - x) = 36.​

Answer 1

1) 8(х – 1,4) = 0,56

8x-11,2=0,56

8x=0,56+11,2

8x=11,76

x=11,76:8

x=1,47

2)(4,6 - x) : 19 = 4,18

(4,6 - x) = 4,18*19

4,6 - x =79,42

x=4,6-79,42

x=-74,82

3) (51,32 + х) - 0,12 = 72

51,32 + х = 72,12

x=72,12-51,32

x=20,8

4) 17,28 : (56 - x) = 36

56 - x = 36*17,28

56 - x=622,08

x=-622,08+56

x=-566,08