
Home > CAAC > Chapter 6 > Lesson 6.1.1 > Problem 6-9
6-9.
Set the two equations equal to each other.
Solve for b.
12b + 3 = −2b − 4
14b = −7
Substitute b back into one of the original equations to find a.
Remember to check by substituting a and b back into both of the original equations.
a = −6 + 3
a = −3