Question

Here is the other question

Answer 1

1. -3 × A1 + A2 --> B2

2.
`-(1)/(7)` × B2 --> C2

Explanation:

1. -3 × A1 + A2 --> B2

(4x × -3) + 12x = -12x + 5x = -7x

(2y × -3) + 6y = -6y + 6y = 0y

(-10 × -3) + -9 = 30 - 9 = 21

2.
`-(1)/(7)` × B2 --> C2

-7x ×
`-(1)/(7)` = 1x

21 ×
`-(1)/(7)` = -3

Same process as last time