Sally was asked to find two integers such that one is three less than 4 times the other and the sum of the two integers is 42. The integers must be
a 14,28
b 15, 27
c 9,33
d -13,55

Question

Sally was asked to find two integers such that one is three less than 4 times the other and the sum of the two integers is 42. The integers must be
a 14,28
b 15, 27
c 9,33
d -13,55

anonymous · Answer

Lets call the integers a & b

a is three less than 4* b: a + 3 = 4b

and a + b = 42

Can you solve the system of these two equations using substitution?

anonymous · Answer

would i subtract 42?

anonymous · Answer

im just really confused

anonymous · Answer

a + b = 42 ==> a = 42 - b 

then you can substitute:
a + 3 = 4b ==> 42 - b + 3 = 4b  Can you simplify and solve this for b? Once you have b, plug it into a + b = 42 to find a.