Math, asked by gurpreetkaursandhu98, 4 hours ago

solve the equation and check the answer
8x+21/4=3x+7​

Answers

Answered by reddamjyothika
2

Answer:

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Answered by ISAlishaTripathy
6

Answer:

The value of x is 7/20 .

Step-by-step explanation:

8x +  \frac{21}{4}  = 3x + 7 \\  =  > 8x - 3x = 7 -  \frac{21}{4}  \\  =  > 5x =  \frac{28 - 21}{4}  \\  =  > 5x =  \frac{7}{4}  \\  =  > x =  \frac{7}{4}  \div 5 \\  =  > x =  \frac{7}{4}  \times  \frac{1}{5}  \\  =  > x =  \frac{7}{20}

✔✅✔✅✔✅✔✅Checking the answer by putting value of x in L.H.S. and R.H.S. :-

L.H.S =

(8 \times \frac{7}{20})  +  \frac{21}{4}  \\  =  \frac{14}{5} +  \frac{21}{4}   \\  =  \frac{ 56+105 }{20}  \\  =  \frac{161}{20}  \\

R.H.S.=

(3 \times  \frac{7}{20})  + 7 \\  =  \frac{21}{20}  + 7 \\  =  \frac{21 + 140}{20}  \\  =  \frac{161}{20}

L.H.S. = R.H.S.

The answer is taken out first and then it is also verified.

So the answer is correct.

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