Question

Use the elimination method to solve the system of equations. a+6b=-1 and a+3b=-4

Answer 1

subtract the two equations

a + 6b = -1
-
a + 3b = -4
========
0 + 3b = 3

divide both sides by 3

3b/3 = 3/3

b = 1

now substitute this into the first equation

a + 6b = -1

a + 6(1) = -1

a + 6 = -1

subtract 6 from both sides

a = -1 - 6

combine like terms

a = -7

does that help?

Answer 2

yes thank you very much.

Answer 3

welcome