Posted by evelyn on Friday, October 1, 2010 at 4:27pm.
x - y = 12,
2x/5 = y/3 + 6,
Multiply both sides by 15, the common denominator:
6x = 5y + 90,
6x - 5y = 90,
Multiply both sides of 1st Eq by -6 and add the 2 Eqs:
x - y = 12
6x - 5y = 90
-6x + 6y = -72
6x - 5y = 90
y = 18,
Substitute 18 for y in the 1st Eq:
x - 18 = 12,
x = 30.
Solution set: x = 30, and y = 18.
Related Questions
Grade 8 Math - Can you write them in Mathematical/numbers form I'll solve ...
math - The greater of two numbers is 1 more than twice the smaller. Three times ...
Math - Suppose you have two numbers. The difference of the two numbers is 12. ...
Algebra 1 Honors - When two numbers are added together, the result is 45. Twice ...
math - The difference of two numbers is 9. The sum of 3 times the greater number...
Algebra 1- Please Help !!!!!!!!:D - When two numbers are added together, the ...
Reiny! Reiny! Reiny! Answer Check and HW Help! - Translate to a system of ...
high school (math) - Match the mathematical expression with its translation. 1. ...
algebra - Are the following true or false? 1. The difference of two natural ...
3 Grade - Byron threw two rings. the difference between the numbers is 12. the ...
For Further Reading
