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 - вопрос №72383302792063970089021416227208907005 от annsamoilenko16 11.07.2021 21:50

Question

Математика: 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

annsamoilenko16 · Answer

Х + 2 = 7 * 9 х + 2 = 63х = 63 - 2х = 61 61 + 2 = 7 * 9       63 = 63х - 20 = 63 : 9х - 20 = 7х = 7 + 20х = 27 27 - 20 = 63 : 9         7 = 7х + 700 = 890х = 890 - 700х = 190190 + 700 = 890       890 = 890х * 2 = 14 + 16х * 2 = 30х = 30 : 2х = 1515 * 2 = 14 +16     30 = 30х : 2 = 27 - 20х : 2 = 7х = 7 * 2 х = 14 14 : 2 = 27 - 20       7 = 7890 - х = 700х = 890 - 700х = 190890 - 190 = 700       700 = 70056 - х = 48 : 6 56 - х = 8х = 56 - 8х = 4856 - 48 = 48 : 6         8 = 872 : х = 45 : 5 72 : х...