Step This is a system of two linear equations. Equation 1: x + 3y = 29 Equation 2: 9x – 4y = 44 To solve the system by the method of substitution, the first step is to solve Equation 1 for x in terms of y. Remember to change the sign of a term when you move it to the opposite side. x = 29 - (3 Next substitute this expression for x in Equation 2 to get a single variable equation in y. 9(29 - (3 ») - 4y = 44 Expand the expression on the left hand side by using the Distributive Property. |× )v- ay = 44 261 - Move the constants to one side and combine like terms. -31y = | Divide each side of the equation by the same number to get the value of y. y = Submit Skip (you cannot come back).