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Translate the given expression to an equation and then solve the equation. Check your answer.
1. Twice the number increased by 12 is 28. Find the number.
2. The product of 12 less than twice a number is 20. Find the number.
3. 25 fewer than a number is 156. Find the number.
4. Thrice the sum of a number and five. What is twice the number?
5. The difference of four times a number and 8 is 32. Find the number.


Sagot :

Answer:

1.) 2n+12 =28

2n=28-12

2n=16

2n/2 =16/2

n=8

2.)2n-12 =20

2n =20+12

2n =32

2n/2=32/2

n=16

3.) n-25 =156

n=156+25

n=181

4.)3(n+5)

twice the number is 2n.

5.) 4n-8 =32

4n =32 +8

4n =40

4n/4 =40/4

n=10