Реши уровнения.х+2=7*9,,х-20=63/9,,х+700=890,х*2=14+16,,х/2=27-20,,890-х=700,,56-х=48/6,,72/х=45/5,,х-700=190
Х + 2 = 7 * 9 х + 2 = 63 х = 63 - 2 х = 61 ____________ 61 + 2 = 7 * 9 63 = 63 х - 20 = 63 : 9 х - 20 = 7 х = 7 + 20 х = 27 ____________ 27 - 20 = 63 : 9 7 = 7 х + 700 = 890 х = 890 - 700 х = 190 ________ 190 + 700 = 890 890 = 890 х * 2 = 14 + 16 х * 2 = 30 х = 30 : 2 х = 15 ________ 15 * 2 = 14 +16 30 = 30 х : 2 = 27 - 20 х : 2 = 7 х = 7 * 2 х = 14 _____________ 14 : 2 = 27 - 20 7 = 7 890 - х = 700 х = 890 - 700 х = 190 ________ 890 - 190 = 700 700 = 700 56 - х = 48 : 6 56 - х = 8 х = 56 - 8 х = 48 ________ 56 - 48 = 48 : 6 8 = 8 72 : х = 45 : 5 72 : х = 9 х = 72 : 9 х = 8 ________ 72 : 8 = 45 : 5 9 = 9 х - 700 = 190 х = 190 + 700 х = 890 __________ 890 - 700 = 190 190 = 190