I am having trouble figuring out a math problem?

Science & Mathematics by Anonymous 2018-05-25 11:05:01

Social Science

5 answers

The sum of two numbers is 24. Twice the smaller number is 3 less than the larger number. What are the two numbers?

Anonymous

m+n = 24 n = 24-m 2m = n-3 2m = (24-m)-3 m = 7 n = 24-m = 17
Anonymous
Anonymous

You have two variables and two equations. a + b = 24 Get on variable in terms of the other: -----> b = 24 - a Substitute that into the other equation and solve for the single variable. 2a = b - 3 = 24 - a - 3 -----> 3a = 21 OR a = 7 and b = 24 - 7 = 17
Anonymous

2(24-b) = b-3 51 = 3b Numbers are 7 & 17
Anonymous

x + y = 24 x = 2y + 3 Solve the system of equations. 2y + 3 + y = 24 3y = 21 y = 7 x = 2(7) + 3 = 17