Describe and correct the error in solving the system of linear equations : the solution of the linear equation y=0.5x+1 and y=-x+7 is x=4

To solve this system of equations we can use the substitution method. Substitute what 'y' equals in the first equation into the second:






Now solve for 'x', subtract 1 to both sides:



Add 'x' to both sides:



Divide 1.5 to both sides:



So the x-value of the solution to this system is 4, now plug this into any of the two equations to find the y-value:









This is the y-value of our solution, so the entire solution to this system of equations is (4, 3).

Divide 40%5 and your answer is 8