Question

cine imi face ex 2 punctele a si b dau coroana.

Answer 1

a)3(2x+1)/7-2(x+5)/6=3x-3/21-5x+5/14
11/21x+-26/21=-3/14x+-1/2
11/21z+-26/21+3/14x=-3/14x+-1/2+3/14x
31/42x+-26/21=-1/2
31/42x=31/42
(42/31)-*(31/42x)=(42/31)*(31/42)
x=1
b)|2x-3|-4|=7
2x-12=7
2x-12+12=7+12
2x=19
2x/2=19/2
x=19/2