1) (с-130)*50=500
с-130 = 500 : 50
с-130 = 10
с = 130 + 10
с = 140
2) х:(240:2)=15
х : 120 = 15
х = 120 * 15
х = 1800
1)
(с-130)*50=50050с-6500=500
50с=7000
с=7000:50
с=140
ответ:140 2) х:(240:2)=15х : 120 = 15х = 120 * 15х = 1800
ответ:1800
1) (с-130)*50=500
с-130 = 500 : 50
с-130 = 10
с = 130 + 10
с = 140
2) х:(240:2)=15
х : 120 = 15
х = 120 * 15
х = 1800
1)
(с-130)*50=500
50с-6500=500
50с=7000
с=7000:50
с=140
ответ:140
2) х:(240:2)=15
х : 120 = 15
х = 120 * 15
х = 1800
ответ:1800