A)d÷30=200-80 б)140-x=630÷7 в)6×c=420+120 г)320÷a=72÷36 - вопрос №71826153020080140630764201203207236 от owl42 02.11.2021 05:55

Question

Математика: A)d÷30=200-80 б)140-x=630÷7 в)6×c=420+120 г)320÷a=72÷36

owl42 · Answer

D÷30=200-80d : 30 = 120d = 120 * 30d = 3 6003 600 : 30 = 200 - 80 140-x=630÷7140 - х = 90х = 140 - 90х = 50140 - 50 = 630 : 76×c=420+120 6×c = 540с = 540 : 6с = 906 * 90 = 420 + 120320÷a=72÷36320÷a = 2а = 320 : 2а = 160320 : 160 = 72 : 36...