Question

if i take three-fourths of a number and add 3 to it,i get 21​

Answer 1

Answer:

Let the unknown number be 'x'

Step-by-step explanation:

$\frac{3}{4} x + 3 = 21$

$\frac{3}{4} x = 21 - 3$

$\frac{3}{4} x = 18$

$3x = 18 \times 4$

$3x = 72$

$x = 72 \div 3$

$x = 24$

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Answer 2

Question:-

If I take three-fourths of a number and add 3 to it, I get 21.

Answer:

$\bold{STEP-BY-STEP-EXPLANATION:}$

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Let us assume the required number be x

Three-fourths of a number = (3/4) x

The given above statement can be written as,

= (3/4) x + 3 = 21

By transposing 3 from LHS to RHS it becomes – 3

= (3/4) x = 21 – 3

= (3/4) x = 18

Multiply both side by 4,

Then we get,

= (3x/4) × 4 = 18 × 4

= 3x = 72

Then,

Divide both side by 3,

= (3x/3) = 72/3

= x = 24