1. 8х + 12 = 5х + 3
2. 3(2х + 1) + 7 = 4
3. 6 + 3(5х – 7) = 4х + 7
4. 3(7х – 4) – 4(6х + 5) = х
5. 3х – 5(2х + 3) – 6(5х – 4) = –28

Question

Математика: 1. 8х + 12 = 5х + 3 2. 3(2х + 1) + 7 = 4 3. 6 + 3(5х – 7) = 4х + 7 4. 3(7х – 4) – 4(6х + 5) = х 5. 3х – 5(2х + 3) – 6(5х – 4) = –28

supertriom · Answer

1. 8х+12=5х+3 8х-5х=3+12 3х=15 х=5ОТВЕТ: 52. 3(2х+1)+7=4 6х+3+7=4 6х=4-10 6х= -6 х= -1ОТВЕТ: -13. 6+3(5х-7)=4х+7 6+15х-21=4х+7 15х-4х=7+15 11х=22 х=2ОТВЕТ: 24. 3(7х-4)-4(6х+5)=х 21х-12-24х-20=х -3х-х=32 -4х=32 х= -8ОТВЕТ: -85. 3х-5(2х+3)-6(5х-4)= -28 3х-10х-15-30х+24= -28 -37х= -28-9 -37х= -37 х= 1ОТВЕТ: 1...