Solve the system of linear equations using linear combination.
3a + 6b = 45
2a – 2b = –12
which is the solution to the system?

3a + 6b = 45
2a - 2b = -12multiply by 3

3a + 6b = 45
6a - 6b = - 36 ...(result of multiplying by 3)
add
9a = 9
a = 1

3a + 6b = 45
3(1) + 6b = 45
3 + 6b = 45
6b = 45 - 3
6b = 42
b = 7

solution is : (1,7)

A. p = 2(l + w)p/2 - l = ww = p/2 - l b. while isolating the variable w in the equation, i first divided both sides by 2 and then i subtracted l from both sides. i hope this .