Question

6(2m+9)=5(9m-7)
-16(x-2)=3(x+ 4)
4(2a+4)=5(5-7a)
8(74-8)=7(3h+4)

Answer 1

Răspuns:

Salutare!

1. 6(2m+9)=5(9m-7)

12m+54=5(9m-7)

12m+54=45m-35

12m=45m-35-54

12m=45m-89

12m-45m=89

m=89/33

2.-16(x-2)=3(x+4)

-16x+32=3x+12

-16x=3x+12-32

-16x=3x-20

-16x-3x=20

x=20/19

3.4(2a+4)=5(5-7a)

8a+16=-35a+25

8a=-35a+25-16

8a=-35a+9

9=-35a-8a

a=9/43

4.8(74-8h)=7(3h+4)

-64h+592=21h+28

-64h=21h+28-592

-64h=21h-564

-64h-21h=564

h=564/8

#copaceibrainly