Ecuaciones De Primer Grado

1• 3x+5-2x+6x = 4x+8
3x+5 -5 -2x+6x-4x = 8-5
3x = 3
x=3/3
X= 13(1)+5-2(1)+6(1)=4(1)+8
3+5-2+6=4+8
8-2+6=12
6+6=12
12=12

2• 3(x+5)+2x=7x+93x+15+2x=7x+9
15-9=7x-3x-2x
2x=6
x=6/2
x=3

3(3+5)-2(3)=7(3)+9
3(8)+6=21+924+6=30
30=39
3• 5x+2/4=x+1
5x+2=(x+1)4
5x+2=4x+4
5x-4x=4-2
x=2
5x+2/4=x+15(2)+2/4=2+1
10+2/4=3
12/4=3
3=3

4• 3(x+2)/2=4(x-1)+3
3(x+2)/2= 4x - 4 + 33(x+2)/2 = 4x -1
3(x +2-2)2= (4x-1)2
3x+6 = 8x -2
3x-8X = -2 -6
-5x = -8
x=-8/-5
x= 8/5

5• (4x - 6) /3 + (2(x+4)/5) = 2x
(4x - 6)/3 + (2x + 8)/ 5 = 2x4x/3 - 6/3 + 2x/5 + 8/5 = 2x
- 6/3 + 8/5 = 2x - 4x/3 - 2x/5
(- 30 + 24)/15 = 2x- 4x/3 - 2x/5
- 6/15 = 2x - (20x - 6x)/15
- 6/15 = 2x - 26x/15
- 6/15 = (30x- 26x)/15
-6/15 = 4x/15
(- 6/15) * 15 = 4x
-6 = 4x
- 6/4 = x
x = - 3/2