Find the measure of side a? anyone? thanks?

If 1 is divided by the sum of y& 4. the result is equal to 3 divided by 4 .find the value of m?

Graph red beads cost $1 an ounce and gold beads cost $3 an ounce. juanita wants to purchase a 12-ounce mixture of red and gold beads that she can sell for $2 an ounce. the solution of the system shows the number of beads needed for juanita to break even. x + y = 12, x + 3y = 24 how many ounces of red beads will juanita buy to break even? how many ounces of gold beads will she buy?

Find the value of x. give reasons to justify your solutions! c ∈ ae