Question

3.x - 7800 = 1200 (k+2 958): 57 = 139 срочно!!​

Answer 1

Ответ:

1)3x-7800=1200

3x=1200+7800

3x=9000

x=9000/3

x=3000

3*3000-7800=1200

2)(k+2958):57=139

k+2958=139*57

k+2958=7923

k=7923-2958

k=4965

(4965+2958):57=139