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