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what is the algebraic equation for a number decreased by 8 is equal to 16 ?​

Sagot :

Answer 1

Given

Twice a number decreased by 8 equals 16.

To Find

Find the number.

Solution

Let the number be x.

According to Question:

2x - 8 = 16

2x = 16 + 8

2x = 24

x = 8/2

x = 12

So, the number is 4.

Answer 2

Given

A number exceeds two-fifths of it by 36.

To Find

Find the number.

Solution

Let the number be x

According to Question

x - 2/5x = 36

5x - 2x / 5 = 36

3x / 5 = 36

3x = 36 × 5

3x = 180

x = 180/3

x = 60

So, the number is 60.