Question

please solve these questions
I will mark you as brainlist
please do it ​

Answer 1

Answer:

2. Let the unknown number be equal to x

So according to the question... it tells us that x added to 21 and we get 30 as the sum.

We can set up an equation:

x + 21 = 30

x = 30 -21

x = 9

Therefore 9 is the answer...

3. Let the unknown number be equal to x

The question tells us that the product of 5 and the number gives us 40

5 * x =40

x = 40/5

x = 8

Therefore the unknown number is 8

4. Let the unknown number be equal to x

The question tells us that 2 times the unknown number added with 11 gives 65

So we can set up an equation:

2x + 11 = 65

2x = 65-11

2x= 54

2x/2 = 54/2

x = 27

Therefore the unknown number is 27

5. Let the unknown number be equal to x

The question tells us that if we add 5 to the unknown number and divide by 4, The result is 9

We can set up an equation:

5 + x/ 4 =9

5 + x = 9 *4

5 + x = 36

x = 36-5

x = 31

6. Let saniya's age be equal to x

Therefore Sarah's age is equal to x + 5

According to the question we can set up an equation:

3+4 + 4( x) = 3(x+5)

7+ 4x = 3x + 15

4x-3x = 15 - 7

x = 8

Therefore Saniya's age = x = 8

Therefore Sarah's age = x+5 = 8+5 = 13

HOPE THIS HELPED!!!

PLZ MARK AS BRAINLEST!!!