External Assignment
9x+3x=144
12x =144
X=144/12
X=12
36=5x-x
36=4x
X=36/4
X=9
6x+2x-3x=70
8x-3x=70
5x=70
X=70/5
X=14
4x-55=9x
4x-9x=55
-5x=55
X=-11
X=4x+30
X-4x=30
-3x=30
X=-10
2/3x-1/3x=5
2/3x-1/3x=2/3x
1/3x=5
X=15
1/2x-1/4x=1
1/2x-1/4x=1/4x
1/4x=1
X=4
0.8x-0.2x=24
0.8x-0.2x=0.6x
0.6x=24
X=24/0.6
X=40
5(6x-2) =50
5(6x)-5(-2) =50
30x +10=50
30x=50-10
30x=40
X=40/30
X=4/3
10x-(5x+8)42
10x-42(5x+8)
10x-210-336
10x-546
22x-3(5x+4) =16
22x-15x-12=16
7x-12=16
7x=12+16
7x=28
X=28/7
X=4
1.8x-0.4x=0.6-1.6x
1.4x=0.6-1.6x
1.4x+1.6x=0.6
3x=0.6
X=0.6/3
X=0.2
0.2x+3.9=1.8x-0.5x
0.2x-1.8x+0.5x=-3.9
-1.1x=-3.9
X=-3.9/-1.1
X=3.5
5(3x-2) +8=43
15x-10+8=43
15x-2=43
15x=45
X=45/15
X=3
7x+10=3x+50
7x-3x=50-10
4x=40
X=40/4
X=10
5-2x=25-4x
5-25=-4x+2x
-20=-2x
X=-20/-2
X=10
7x-17+2x=2-8x+15
7x+2x+8x=2+15+17
17x=34
X=34/17
X=2
2x-3<12
2x<12+3
2x<15
X<15/2
X<7.5
3x+4>10
3x>10-4
3x>6
X>6/3
X>2
-3x-x-3≤21
-3x-x≤21+3
-4x≤24
-x≤24/-4
X≤-6
5x+3≥2x+15
5x-2x≥15-3
3x≥12
X≥12/3
x≥4
3x>3(6-x)
3x> (3*6) 3(-x)
3x>18-3x
3x+3x>18
6x>18
x>18/6
x>3
6x-16≥4 (2x+8)
6x-16≥8x+32
6x-8x≥32+16
-2x≥48
X≥48/-2
X≥-24
X^2-12x+20=0
Ac=20, b=12
X^2 -10x -2x+20=0
X(x-10) -2(x-10) =0
(X-2) (X-10)=0
X=2, x=10
3x^2+x-2=0
3x^+3x-2x+2=0
3x(x+1) -2(x+1)=0
3x-2=0
X=2/3, X= -1
X^2+6x=-5
X^2+6x+5=0
X^2 +x+5x+5=0
X(x+1) 5(x+1)=0
(x+5) (x+1)=0
X=-5, x=-1
3x^2+6x=0
3x(x+2) =0
3x=0, thus, x=0
X=-2
3x^2=6x
3x^2/3x=6x/3x
X=2
X(x+10) =-25
X^2+10x+25=0
X^2+5x+5x+25=0
X(x+5) 5(x+5) =0
(x+5) (x+5)=0
X=-5
