Question

1 ) Rezolvati în Zona ecuatiile:
a) 3 (x+5)-2=2 (x-1)-5
b) 5 (x-7)-3 (x-3)+17=11
c)-3 (x+1)-2 (1-2x)-(x+5)=17 - x

2) a) 7x+17=3
b) 7-4x=15
c) 8x-1=3x+9
d) 11-3x=2x+1

Vă rog să mă ajutați e urgent! !!!!
Mulțumesc frumos pentru ajutor.

Answer 1

3(x+2)-2=2(x-1)-5
3x+6-2=2x-2-5
3x-2x=-7-4
x=-11

5(x-7)-3(x-3)+17=11
5x-35-3x+9=11-17
2x=-6+26
x=20/2
x=10

-3(x+1)-2(1-2x)-(x+5)=17-x
-3x-3-2+4x-x-5+x=17
x=17+10
x=27

2) 7x+17=3
7x=3-17
x=-14/7
x=-2

7-4x=15
-4x=15-7
-x=8/4
x=-2

8x-1=3x+9
8x-3x=9+1
5x=10
x=10/5
x=2

11-3x=2x+1
-3x-2x=1-11
-5x=-10
-x=-10/5
x=2

Answer 2

3(x+5)-2=2(x-1)-5
3x+15-2=2x-2-5
3x+13=2x-7
3x-2x=-7-13
x=-20
5(x-7)-3(x-3)+17=11
5x-35-3(x-3)+17=11
5x-18-(3x-9)=11
5x-18-3x+9=11
2x-18+9=11
2x-9=11=>2x=11+9=>2x=20/2=>x=10
-3(x+1)-2(1-2x)-(x+5)=17-x
-3x-3-2(1-2x)-x-5=17-x
-4x-3-2(1-2x)-5=17-x
-4x-8-2(1-2x=17-x
-4x-8-2+4x=17-x
0x-8-2=17-x
0-8-2=17-x
-8-2=17-x=>x=17+10=>x=27
7x+17=3=>7x=3-17=>7x=-14=>x=-14/7=>x=-2
7-4x=15=>-4x=15-7=>-4x=8=>x=8/-4=>x=-2
8x-1=3x+9=>8x-3x=9+1=>5x=10=>x=10/5=>x=2
11-3x=2x+1=>-3x-2x=1-11
=>-5x=1-11=>-5x=-10=>x=-10/-5=>x=2