Question

1)Rezolvati ecuatiile a)3x-4=8x+11 b)7*(2x-1)=6-2*(4x-3) c)(4x-5)2=25 Urgent va rog dau 20p

Answer 1

a)
3x -4 = 8x +11 
3x - 8x  = 4+11
-5x = 15
x=15 : (-5)
 x = -3

b) 
14x - 7 = 6 - 8x +6
14 x +8x =  7 +6 +6
22x = 19
x= 19:22
x= 0, 8(63) 

c)
8x - 10 = 25
8x=35
x= 35:8
x= 4,375 
 

Answer 2

a) 3x-4=8x+11 => 3x-8x=11+4 => -5x = 15 => x = -3 ;

b)  ... 14x-7=6-8x+6 => 22x =19 => x=19/22 ;

c)  ...  8x-10 = 25 => 8x=35 => x=35/8 ;