Question

Solve the linear system of equations using the linear combination method. {8a−4b=205a−8b=62 Enter your answers in the boxes.

A=

B=

Answer 1

The solution would be (-2, -8)

Explanation:

To use this method, start by multiplying the first equation by -2. Then add the two equations together.

-16a + 8b = -40

5a - 8b = 62

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-11a = 22

a = -2

Now that we have the value of a, use it to solve either equation for b.

a - 8b = 62

-2 - 8b = 62

-8b = 64

b = -8

Answer 2

A=-2

B=-9

Explanation:

It just is