Реши уравнения:570•x-4700=13540; 340•x-416•2=18208; (223440-130•x) :35=6020; (31•550-x)...

Question

Реши уравнения:570•x-4700=13540; 340•x-416•2=18208; (223440-130•x) :35=6020; (31•550-x) •120=10200

Answer 1

 1) 570*x = 18240
x = 32
2)340*x = 19040
 x = 56
3) 130*x = 8 031 100
x = 61
4) 120*x = 79920
 x=666

Answer 2

570•x-4700=13540;
570x=13540+4700;
570x=18240;
x=32.

340•x-416•2=18208;
340x-832=18208;
340x=18208+832;
340x=19040;
x=56.

(223440-130•x) :35=6020;
223440-130x
-------------------=6020;
          35
5(44688-26x)
-------------------=6020;
         35
44688-26x
---------------6020;
        7
44688-26x=42140;
-26x=42140-44688;
-26x=-2548;
x=98.

(31•550-x) •120=10200;
(16120-x)*120=10200;
1934400-120x=10200;
-120x=10200-1934400;
-120x=-1924200;
x=16035.