If you have 63 books and you donate 1/3 of you’re books how many will you have left

Solve this equation using substitution. {4x + y = −2} {4x + 6y = 44}

Which of the following would be a good name for the function that takes the weight of a box and returns the energy needed to lift it?

John used linear combination to solve the system of equations shown. he did so by multiplying the first equation by -3 and the second equation by another number to eliminate the x-terms. what number did jonas multiply the second equation by? 4x-6y=23x+5y=11