Question

Упростите выражения 3x+3(6-x)= 25-5(x+5)= -7(3+x)+7x= 9(2-x)-18= -6(2-x)-18= -24x-4(5-6x)=

Answer 1

= 3х + 18 - 3х = 18
= 25 - 5х - 25 = - 5х
= - 21 - 7х + 7х = - 21
= 18 - 9х - 18 = - 9х
= -12 + 6х -18 = 6х - 30
= - 24х - 20 + 24х = - 20

Answer 2

3x+3(6-x)=3х+18-3х=18

25-5(x+5)=25-5х-25=-5х

-7(3+x)+7x=-21-7х+7х=-21

9(2-x)-18=18-9х-18=-9х

-6(2-x)-18=-12+6х-18=6х-30

-24x-4(5-6x)=-24х-20+24х=-20