Final answer:
To subtract the given equations, isolate the variable (x or y) on one side of the equation by dividing both sides by the coefficient of the variable.
Step-by-step explanation:
To subtract the given equations, we need to isolate the variable (x or y) on one side of the equation.
a) 10x = 20. Divide both sides of the equation by 10 to solve for x: x = 2.
b) 4y = 20. Divide both sides of the equation by 4 to solve for y: y = 5.
c) 4x = 14. Divide both sides of the equation by 4 to solve for x: x = 3.5.
d) -4y = 14. Divide both sides of the equation by -4 to solve for y: y = -3.5.