3(2х-7)=9. -4(х-2)=-6. 3(х-5)=х+3. 3/4-y-12=5-1/4-12 - вопрос №163677303279426353341251412 от anastasiya264 28.10.2020 19:48

Question

Математика: 3(2х-7)=9. -4(х-2)=-6. 3(х-5)=х+3. 3/4-y-12=5-1/4-12 ​

anastasiya264 · Answer

1)3(2х-7)=96х-21=96х=9+216х=30Х=30:6Х=52)-4(х-2)=-6-4х+8=-6-4х=-6-8-4х=-14Х=3,53)3(х-5)=х+33х-15=х+33х-х=3+152х=18Х=9...

3(2х-7)=9. -4(х-2)=-6. 3(х-5)=х+3. 3/4-y-12=5-1/4-12 ​