Question

if I take three fourth of a number and count of three more I get 21 find the number​

Answer 1

Step-by-step explanation:

3/4x+x+3=21

2x+3=21×4/3

2×=28-3

2×=25

×=12.5

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Answer 2

Answer:

Step-by-step explanation:

let the unknown number be x

so, 3/4 * x + 3 = 21 is the equation

+ 3 goes there becomes - 3

so, 3/4 * x = 21-3 = 18

so, 3/4 goes there and becomes 4/3

so, x = 18 * 4/3

now 3*1 = 3 and 3* 6 = 18

therefore 18 and 3 cancelled by each other

so, now x = 6* 4

x = 24

your answer is (x= 24)

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