Question

Rezolvati ecuatiile :

a) (4x-3) · (-3) = 6x + 23

b) 23x - 41= 7 (x+3)

c ) 44 - 13x = 100 - 2(8x-5)

d) 3 (x-2) - 2(x-3) = 5x-12

Answer 1

a) (4x-3) · (-3) = 6x + 23
-12x+9=6x+23
18x=-14
x=-14/18
x=-7/9
x=-0,(7)

b) 23x - 41= 7 (x+3)
23x - 41= 7x+21
16x=62
x=62/16
x=31/8
x=3,875

c ) 44 - 13x = 100 - 2(8x-5)
44 - 13x = 100 - 16x+10
 3x = 110-44
 3x = 66
x=22


d) 3 (x-2) - 2(x-3) = 5x-12
3x-6 - 2x+6 = 5x-12
x = 5x-12
4x=12
x=3