true

Take Class 12 Tuition from the Best Tutors

• Affordable fees
• 1-1 or Group class
• Flexible Timings
• Verified Tutors

Search in

# Number Of Solutions Of The Equation 2x + y = 40, Where Both x And y Are Positive Integers And x <=y

Sujoy Das
08/02/2018 0 0

Question:

Number of solutions of the equation 2x + y = 40 where both x and y are positive integers and x <=y ?

Solution:

2x + y = 40

x <= y

y = x + k; where k >=0

3x + k = 40

x = ( 40 - k ) / 3

x is a positive integer so takes value from 1 to 40 all multiples of 3

13 values.

0 Dislike

## Other Lessons for You

Learning tip
Life is a series of experiences, each one of which makes us bigger, even though sometimes it is hard to realize this. For the world was built to develop character, and we must learn that the setbacks and...

Solution to a integration problem
∫ x² /( x - 1) dx Let's subtract and add 1 to the numerator = ∫ {( x² - 1) + 1} / ( x - 1 ) dx = ∫ {( x + 1) • ( x - 1) / ( x - 1)} + {1 / ( x - 1)} dx = ∫ { ( x...

Listen to the FAIRYTALE
Haven't you always remembered the fairytales heard with a peaceful mind when you were a kid? Try to apply the trick now. Read out the content you are willing to learn in a playback device. Try to put the...
A

Aarti Mishra

Integration by trig substitution
Let's solve one more trig problem using trig substitution. ∫ 5/√(x² - 5 ) dx as variable x precedes constant inside the radical sign we may have substitute x = √5 sec u Let x...

For NEET/ IIT Aspirants - Reaction With Butyllithium And Caron-Dioxide
Butyl-lithium is principally valued as an initiator for the ionic polymerization of dienes,such as butadienes. The reaction is called "carbolithiation". C4H9LI + CH2=CH-CH=CH2 → C4H9-CH2-CH=CH-CH2Li Butyl-lithium...

### Looking for Class 12 Tuition ?

Learn from Best Tutors on UrbanPro.

Are you a Tutor or Training Institute?

Join UrbanPro Today to find students near you

X

### Looking for Class 12 Tuition Classes?

The best tutors for Class 12 Tuition Classes are on UrbanPro

• Select the best Tutor
• Book & Attend a Free Demo
• Pay and start Learning

### Take Class 12 Tuition with the Best Tutors

The best Tutors for Class 12 Tuition Classes are on UrbanPro