Question 9 • Mathematics 8
In the first equation, x + 4y = 14, the coefficient of x is 1, so x can be isolated immediately: x = 14 − 4y. In the second equation, neither variable has a coefficient of 1, so isolating x there requires division. Therefore, the easiest variable to solve for is x in the first equation, choice C.
AI-written and checked against the verified answer.