Question

the sum of three consecutive multiples of 7 is 777.Find these multiples. SOLVE IN ONE VARIABLE

Answer 1

Hi friend,

Here is your answer,
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Let the numbers be (x-7) , x and (x+7)

x - 7 + x + x + 7 =      777
            3x          =      777
                x        =      259
                x-7     =      252
                x+7    =     266

The numbers are 252 , 259 and 266.
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Answer 2

There are three consecutive number
X, (X+1), (X+2)

now,
According to the question

7x +7(x+1) +7(x+2) = 777
=>
7x +7x+7 +7x+14 = 777
21x+21 = 777

21x = 777-21=> 756

X = 756/21
X =36

hence it's multiple are;

X= 36
X+1 = 37
X+2 = 38
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So
7x = 7× 36 ==> 252
7(X+1) = 7×37==>259
7(X+2) = 7×38==>266

Hope it's helpful