Am nevoie la 10: a b si c! RPD dau coroana!

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

2x + 2 + 3x - 6 = 24 - 20x - 3

5x - 4 = 21 - 20x⇒5x + 20x = 21 + 4⇒25x = 25

x = 1

b)4x-9+2(2-3x)=5-3(x-4)

4x - 9 +4 -6x = 5 - 3x +12

4x + 3x - 6x = 17 + 9 - 4

x = 22

c)12(x-3)+5(3-4x)=-7(x+2)

12x - 36 + 15 - 20x = - 7x - 14

-36 +15 +14 = -7x -12x +20x

-7 = x deci x = -7

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

2x+2+3x-6 = 24-20x-3

25x = 25 ; x=1

b) 4x-9+2(2-3x) = 5-3(x-4)

4x-9+4-6x = 5-3x+12

4x-6x+3x = 5+12+9-4 ; x=22 .

c)  12(x-3)+5(3-4x) =-7(x+2)

12x-36+15-20x = -7x-14

12x-20x+7x = -14+36-15

-x = 7 ; x = -7