1)7х-4=х-16 2)5х+(3х-7)=9 3)(7х++3)=5 4)(5х-3)+(7х-4)=8-(15-11х) - вопрос №4244957174162537937354537481511554 от olafff9461 13.10.2021 04:06

Question

Математика: 1)7х-4=х-16 2)5х+(3х-7)=9 3)(7х++3)=5 4)(5х-3)+(7х-4)=8-(15-11х) 5)(х-5)*(х+4)=0

olafff9461 · Answer

1)7х-х=16+46х=-12х=-22)5х+3х-7=98х=16х=23)7х+1-6х-3=5х=74)х=15)Х^2-5Х+4Х-20=0Х^2-Х-20=0Х1=1+9/2=5Х2=1-9/2=-4...