Henrique began to solve a system of linear equations using the linear combination method. His work is shown below: 3 (4x - 7y = 28) → 12x - 21y = 84 - 2 (6x - 5y = 31) → - 12x + 10y = - 62 12x - 21y = 84 + - 12x + 10y = - 62 - 11y = 22 y = - 2 Complete the steps used to solve a system of linear equations by substituting the value of y into one of the original equations to find the value of x. What is the solution to the system?
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