Question

urgentttttttt dau coroana​

Answer 1

Răspuns:

b. 2a+3b=5|*2

2c+b=7

4a+7b+2c =?

4a+6b=5*2=10

2c+b=7

4a+7b+2c=10+7=17

c. x+2y=5|*2, *8

a+3b=6|*4, *8

1.2x+4y +4a+12b=?

2. 8x+16y+8a+24b

1.2x+4y=10

4a+12b=24

2x+4y+4a+12b=10+24=34

2. 8x+16y=8*5=40

8a+24b=48

8x+16y+8a+24b=40+48=88