Question

1.Rezolvati in Q ecuatiile:
a)7(x+2)-3(x-4)-x=2(x+5)+46;
b)8(x+1)-4(x-3)-x=2(x+18);
c)4x+12-3(x+4)=2(x+5);
d)5x+16-4(x+4)=2(x+9);
e)4(x+5)+3(x+3)=2(x+15)+4;
f)5(x+2)+4(x-3)=3(x+8)-14.

Answer 1

a) 7(x+2)-3(x-4)-x=2(x+5)+46
7x+14-3x+12-x=2x+10+46
3x+26=2x+56
x=30.

b) 8(x+1)-4(x-3)-x=2(x+18)
8x+8-4x+12-x=2x+36
3x+20=2x+36
x=16.

c) 4x+12-3(x+4)=2(x+5)
4x+12-3x-12=2x+10
x=2x+10
x=-10.

d) 5x+16-4(x+4)=2(x+9)
5x+16-4x+16=2x+18
x=2x+18
x=-18.

e) 4(x+5)+3(x+3)=2(x+15)+4
4x+20+3x+9=2x+30+4
7x+29=2x+34
5x=5
x=1.

f) 5(x+2)+4(x-3)=3(x+8)-14
5x+10+4x-12=3x+24-14
9x-2=3x+10
6x=12
x=2.

Sper ca te-am ajutat.