How do you find two numbers whose sum is 49, if the greater number is 4 more than 8 times the smaller number?
Call the numbers
substitute the second equation into the first:
Write two equations and solve for one variable. Then substitute the value for the first variable to find the value for the second variable.
The first equation would be
Where x = the first variable
Where y = the second variable.
The second equation would be
where y = the larger number.
To check put the values into the first equation
x = 5 : y = 44