The correct answer is 'Equation F can be written as 2d + 1 = 3d + 7'. In order to find the answer to a system of equations, the two equations must be set equal to each other. For instance, if we had the equations x = y + 1 and x = 3y - 1, we would set the two equations equal to one another to find the answer.
x = y + 1 x = 3y - 1 y + 1 = 3y - 1 1 = 2y - 1 2 = 2y 1 = y
x = y + 1 x = 1 + 1 <span>x = 2
We can use this to solve the set of equations above.
</span><span>2d + 1 = 3d + 7 </span>1 = d + 7 -6 = d