У выражения
1) 3(х + 6) – х – 2(х + 9) =
2) 6 – 3(х + 1) – (7 – х) =
3) (8х + 3) – (10х - 6) – 9 =
4) 5 – 2(х - 1) – ( - 4 – х )=
5) (7х +1) – (9х + 3) + 5 =
6) (3,4 + 2у) - 7(у – 2,3) =
7) 4(5х + 2) - 10(3х - 3) + 15 =
8) 4(х - 1) - 2(2х - 8) + 12 =
9) 5,6 – 3(2 – 0,4х) - 0,4(4х - 1) =
10) 5(х - 12) + 6(х - 10) – (х - 1) =
1) 3(х + 6) – х – 2(х + 9) = 3х+18-х-2х-18= 0
2) 6 – 3(х + 1) – (7 – х) = 6-3х-3-7+х= -4-2х
3) (8х + 3) – (10х - 6) – 9 = 8х+3-10х+6-9= -2х
4) 5 – 2(х - 1) – ( - 4 – х )= 5-2х+2+4+х= 11-х
5) (7х +1) – (9х + 3) + 5 = 7х+1-9х-3+5= -2х+3
6) (3,4 + 2у) - 7(у – 2,3) = 3,4+2у-7у+16,1= 19,5-5у
7) 4(5х + 2) - 10(3х - 3) + 15 = 20х+8-30х+30+15= -10х+53
8) 4(х - 1) - 2(2х - 8) + 12 = 4х-4-4х+16+12= 24
9) 5,6 – 3(2 – 0,4х) - 0,4(4х - 1) = 5,6-6+1,2х-1,6х+0,4= -0,4
10) 5(х - 12) + 6(х - 10) – (х - 1) = 5х-60+6х-60-х+1= -120+10х