Question

am nevoie de ajutor urgent va rog dau coroana

Answer 1

1. a) 6x+3-4x-12=5-4x-2

2x-9=3-4x

2x+4x=3+9

6x=12

x=12/6

x=2

b) 12x-15-6x-21+32=4x+2-14

6x+4=4x-12

6x-4x= -12-4

2x= -16

x= -16/2

x= -8

2. a) 28/100*120 simplifici 100 si 120 cu 4= 28/25*30 simplifici 25 si 30 cu 5=28/5*6=168/5

b) 18/100*325 simplifici 100 si 325 cu 25= 18/4*13= 234/4= 117/2

3. 24/15-36/20+2/15=26/15-9/5 amplificam pe 9/5 cu 3

26/15-27/15= -1/15

Answer 2

1. a. 6x+3-4x-12=5-4x-2
6x+3-12=5-2
6x-9=3
6x=3+9
6x=12
X=2
b. 12x-15-6x-21+32=2(2x-13)
6x-4=4x-26
6x-4x=-26+4
2x=-22
X=-11