1) juan ate 1 1/6 of a candy bar. ryan ate 4/7 of a candy bar. how many candy bars did they eat all together?

2) anna made three different types of cookies. she used 2 1/5 cups of sugar in first recipe, 2 2/3 cups in the second and 4 1/4 cups in the third. how many cups of sugar did alessandra use all together?

1) 73/42 candy bars
2) 109/12 cups of sugar

note: i am unsure that i did this right so rework the problem if you think i did it wrong.

The matrix that best represents the linear system of equations must be written vector by vector in each of the rows. That is, components x in column 1, components and in column 2 and component z in column 3. In column 4 you write the results. Attached solution.