Question

please answer these fast​

Answer 1

Answer:

1

1. n=3 2. n=27 3. n=6 4. 4. n=1/2

2.

1. x=2 2. x=3 3.x= 15 4. x=4/3

3.

1. x=20 2. b=16 3. 7/2 4.= cant see question

4.

1. x= -5 2.x= -11 3. x=5 4. x= 11

Answer 2

1)3n-9

n=9/3=3

2)n/3=9

n=9×3=27

3)2/3 n=4

n=4×3/2

n=12/2=6

4)2/3 n=1/3

n=1/3×3/2

n=3/6=1/2

II)

1)5x-1=9

5x=9+1

5x=10

x=10/5=2

2)5x/3 +1=6

5x/3=6-1

5x/3=5

5x=5×3

5x=15

x=15/5=3

3)2/3 X+4=14

2/3 X=14-4

2/3 X=10

x=10×3/2

x=30/2=15

4)3/4 x-1/2=1/2

3/4 X=1/2 +1/2

3/4 X=2/2

3/4 X=1

x=1×4/3

x=4/3

III

1)3x+3=63

3x=63-3

3x=60

x=60/3=20

2)b/2=8

b=8×2

b=16

3)X/5=7/10

x=(7/10)×5

x=7/2

4)X/5 +1=7/10

x/5 =(7/10) -1(LCM 10)

x/5=(7-10)/10

x/5=-3/10

x=(-3/10)×5

x=-15/10

x=-3/2

IV

1)x-3=-8

x=-8+3

x=-5

2)X+3=-8

x=-8-3

x=-11

3)X+3=8

x=8-3

x=5

4)x-3=8

x=8+3

x=11