Answer:
A
Explanation:
Systems of Equations:
In a systems of equations we have to set up two equations which relate to each other and in this case we're setting up two linear equations, so let's take a look at the question.
Let's first make an equation from: "A monster pizza, m, has 7 fewer slices than twice the number on a large pizza, l" That means if we subtracted twice the large pizza from monster pizza, we would get 7 slices.
and if we multiply by -1 on both sides:
Now let's use the second piece of information given: "the difference between the number of slices on a monster pizza and the number of slices on a large pizza is 4 slices" this means if we take away 4 slices from the monster pizza we get the same amount of slices on a large pizza:
and rearranging we get:
making A the correct option