Problema Solution
three times a number plus seven times a second number equals 49. five times the first number minus four times the second number equals 19. find the two numbers
Answer provided by our tutors
let
x = the first number
y = the second number
three times a number plus seven times a second number equals 49
3x + 7y = 49
five times the first number minus four times the second number equals 19
5x - 4y = 19
by solving the system of equations
3x + 7y = 49
5x - 4y = 19
we find
x = 7
y = 4
click here to see the step by step solution of the system of equations
the numbers are 7 and 4.