Question

СРОЧНО! решите
н 5 (г,и,м)
н 6(д)

Answer 1

Ответ:

5

г 4t+33/21=17+t/14 |•7

3(4t+33)=2(17+t)

12t+99=34+2t

12t-2t=-99+34

10t=-65|÷10

t=-6,5

u

x+2/9-1=2x+1/18-x/6 |•18

2(x+2)-1=2x+1-3x

2x+3=-x+1

2x+x=-3+1

3x=-2|÷3

x=-1,5

M

3-7t/10+t+1/2=4-7-3t/5|•10

27-7t+5(t+1)=40-14+6t

27-7t+5t+5=26+6t

32-2t=26+6t

-2t-6t=-32+26

-8t=-6|÷(-8)

t=0,75

6

D

5(b-1)²-2(b+3)²=3(b+2)²-7(6b-1)

5b²-10b+5-2b²-12b-18=3b²+12b+12-42-7

3b²-22b-13=3b²-30b+19

-22b+30b=19+13

8b=32|÷8

b=4