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0.4x + 0.3y = 1.7 0.7x …

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0.4x + 0.3y = 1.7 0.7x - 0.2y = 0.8 Solve it using substitution method

Posted by Sunidhi Baghel 7 years, 5 months ago

CBSE > Class 10 > Mathematics

6 answers

Shivani Sreenivas 7 years, 5 months ago

U just gotta practice a bit more if ur still not confident enough and you'll do great!

Shivani Sreenivas 7 years, 5 months ago

And ur ans is correct ?

Shivani Sreenivas 7 years, 5 months ago

Yes Alpna I can

Shivani Sreenivas 7 years, 5 months ago

4/10x + 3/10y = 17/10 7/10x - 2/10y = 8/10 = 4x + 3y /10 = 17/10 4x + 3y = 17 -1st eq Similarly 7x - 2y = 8 - 2nd eq x = 8+ 2y / 7 (from 2 ) Putting value in eq 1 4 (8+2y /7 ) +3y =17 32+8y /7 +3y = 17 Solve and get the value of y Then put the value of y in equation no. 1 And get the value of x Easey peasy dude ? don't freak out because of the decimal and make it easy by dividing it by 10 or 100 or 1000 And then solve according to the question and you'll do fine .??

Alpna Suthar 7 years, 5 months ago

Are u able to understand it????

Alpna Suthar 7 years, 5 months ago

On taking LCM 4x+3y=17 7x-2y=8 Now on multiplying 28x+21y=119 28x-8y. =32 y=3 and x=2

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Posted by Kanika . 1 month ago

CBSE > Class 10 > Mathematics

1 answers

This content has been hidden. One or more users have flagged this content as inappropriate. Once content is flagged, it is hidden from users and is reviewed by myCBSEguide team against our Community Guidelines. If content is found in violation, the user posting this content will be banned for 30 days from using Homework help section. Suspended users will receive error while adding question or answer. Question comments have also been disabled. Read community guidelines at https://mycbseguide.com/community-guidelines.html

Few rules to keep homework help section safe, clean and informative.

Don't post personal information, mobile numbers and other details.
Don't use this platform for chatting, social networking and making friends. This platform is meant only for asking subject specific and study related questions.
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Ask specific question which are clear and concise.

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