Question

14. I thought a number, multiplied it by 5 and 6 respectively and then divide the result by 3. take away the
number I first thought of and I got the answer as 36. What was the number I thought?​

Answer 1

Step-by-step explanation:

Algebraic Equations - word problems

seesaw

An equation is almost a sort of seesaw: you add something to the left, lose the balance and are forced to do the same to the right; you divide and multiply by something, once again, the same must be done to the other side; if you subtract something, there is no exception. Therefore, solving equation means, getting rid of everything around x by seesaw method.

E.g.1

I think of a number, add 7 and the answer is 10. Find the number.

Let the number be x.

x + 7 = 10

-7 => x + 7 -7 = 10 -7

x = 3

The number is 3.

E.g.2

I think of a number, take away 5 and the answer is 10. Find the number.

Let the number be x. x - 5 = 10

+ 5 => x -5 + 5 = 10 + 5

x = 15

The number is 15.