1)3(x+3)-(5x-2)=3
3х+9-5х+2=3
3х-5х=3=3-2-9
-2х=-8
х=-8:(-2)
х=4
проверка:
3(4+3)-(5*4-2)=3
1) 3(x+3)-(5x-2)=3
3x+9-5x-2=3
3x-5x-2+9=3
-2x+7=3 |*(-1)
2x-7=3
2x-7-3=0
2x=-10
x=-5
1)3(x+3)-(5x-2)=3
3х+9-5х+2=3
3х-5х=3=3-2-9
-2х=-8
х=-8:(-2)
х=4
проверка:
3(4+3)-(5*4-2)=3
1) 3(x+3)-(5x-2)=3
3x+9-5x-2=3
3x-5x-2+9=3
-2x+7=3 |*(-1)
2x-7=3
2x-7-3=0
2x=-10
x=-5