Answered

Makakuha ng eksaktong at maaasahang sagot sa lahat ng iyong katanungan sa IDNStudy.com. Sumali sa aming komunidad ng mga bihasa upang makahanap ng mga sagot na kailangan mo sa anumang paksa o problema.

The difference between two numbers is 14.Three times the larger number is two more than 5 times the smaller. What are the numbers ?

Sagot :

Mariamikaylaidn
[tex]a-b=14 \\\\ 3a=5b+2 \\\\ \boxed{a=\frac{5b+2}{3}} \\\\\\ \frac{5b+2}{3}-b^{(3}=14^{(3} \\\\ 5b+2-3b=42 \\\\ 2b=42-2 \\\\ 2b=40 \ |:2 \\\\ \boxed{\boxed{b=20}} \\\\ a= \frac{5*20+2}{3} \\\\ a=\frac{100+2}{3} \\\\ a=\frac{102}{3} \\\\ \boxed{\boxed{a=34}}[/tex]
Jeremiaidn
First, translate it to linear equation:
Let the larger number be x and the smaller number y:
x-y=14
3x=5y+2

Transpose it and use the amazing concept of SUBSTITUTION!!
(Reminder: If something goes to the other side, its sign is changed!)
x-y=14
x-14=y
So, use x-14 as your y for the second equation!!!
3x=5y+2
3x=5(x-14) + 2
3x=5x-70+2
3x=5x-68
3x-5x=-68
-2x=-68
-2x/-2=-68/-2
x=34
x-y=14
34-y=14
34-14=y
y=20
So:
x=34 and y=20
Check:
x-y=14
34-20=14
14=14, Check!
3(34)=5(20)+2
102=100+2
102=102, Check!!
Therefore, the larger number is 34 and the smaller number is 20!