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Assignment: Solve the following equations. 1. 12-2n=4n 2. 5y-9=13 3. 1/2x+3=18 4. 2y+6=15+y 5. 7n=15+2n​

Sagot :

SHINALCANTARAIN

Step-by-step explanation:

1. 12 - 2n = 4n

Transpose

12 = 4n + 2n

12 = 6n

12/6 = n

2 = n

n = 2

2. 5y - 9 = 13

Transpose

5y = 13 + 9

5y = 22

y = 22/5

3. 1/2x + 3 = 18

Transpose

1/2x = 18 - 3

1/2x = 15

Cross multiply

x = 2(15)

x = 30

4. 2y + 6 = 15 + y

Transpose

2y - y = 15 - 6

y = 9

5. 7n = 15 + 2n

Transpose

7n - 2n = 15

5n = 15

n = 15/5

n = 3

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