Given the equation 3x + 7 = 13, which order of operations completely solves for x?

Zack and tia played chess for 50 min they put the chessboard away at 11: 20 when did they start

Jack has a rectangular piece of land, the area of which is represented by a1 = 9.5l. his brother has a different rectangular piece of land, the area of which is represented by a2 = l(14 − l). let a represent the area in square meters and l represent the length in meters of the pieces of land. the two equations plotted on a graph meet at a point as shown in the image

Do u add or subtract after u multiply