This pair of linear equations may be solved simultaneously by using the elimination method. This will involve ensuring that the coefficient of one of the unknown variables is the same in both equations.
It may be solved by substitution in that one of the variable is made the subject of the equation and the result is substituted into the second equation. Using the elimination method, multiply the second equation by 4, the result is
First, multiply the second equation by 4 so that 8y can cancel out. Now you have 5x+8y=-29 and 28x-8y=-268 Add these equations to get 33x=-297 Divide both sides by 33, and you have x=-9 Now, simply solve for y by plugging it into an equation, and you have y=2 The final answer is (-9,2)!
Since Michelle (he ? ) has 11/12 quarts of paint, and need 1/6 per quart to paint, we do 11/12 / 1/6 = 11/2, or 5.5. We cannot paint .5 of a block, so Michelle can only paint 5 quarts.
