Question

If the sum of 5,8,12 and 15 is equal to the sum of 3,4,x and x+3, what is the value of x?​

Answer 1

Step-by-step explanation:

5+8+12+15=3+4+x+x+3

40-10=2x

30=2x

x=30/2

x=15

Answer 2

The value of x = 15

Given:

Sum of 5, 8, 12 and 15 is equal to the sum of 3, 4, x and x+3

To find:

The value of x

Solution:

Given that sum of 5, 8, 12 and 15 = the sum of 3, 4, x and x+3  

Now find sum of 5, 8, 12 and 15 and sum of 3, 4, x and x+3 by adding

Sum of  5, 8, 12 and 15 = 5 +8 +12 +15 = 40

Sum of 3, 4, x and x+3 = 3 +4 +x + x+3 = 10 + 2x

From given data 10 + 2x = 40

⇒ 2x = 30

⇒ x = 15

⇒ The value of x = 15

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