Question

The sum of x and x +3 is 15. The value of x is

Answer 1

Answer:

x+x+3=15

2x=15-3

2x=12

x=6

Step-by-step explanation:

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Answer 2

Given

• Sum of x and (x + 3) is 15.

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To find

• Value of x.

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Solution

• We need to find the value of x, when it is given that sum of x and (x + 3) is 15.

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$\tt:\implies\: \: \: \: \: \: \: \: {x + (x + 3) = 15}$

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$\tt:\implies\: \: \: \: \: \: \: \: {2x + 3 = 15}$

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$\tt:\implies\: \: \: \: \: \: \: \: {2x = 15 - 3}$

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$\tt:\implies\: \: \: \: \: \: \: \: {2x = 12}$

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$\tt:\implies\: \: \: \: \: \: \: \: {x = \dfrac{12}{2}}$

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$\bf:\implies\: \: \: \: \: \: \: \: {x = 6}$

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Hence,

• The Value of x is 6.

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$\huge\underline{\bf{Verification}}$

• By putting the value of x = 6, we will check our answer.

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$\tt\longmapsto{6 + (6 + 3) = 15}$

$\tt\longmapsto{6 + 9 = 15}$

$\tt\longmapsto{15 = 15}$

$\tt\longmapsto{L.H.S = R.H.S}$

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Hence Verified

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