Can you please explain this problem with the answer

Question

On Monday Harold picked up four donuts and two large coffees for the office staff. He paid $4.74. On Tuesday Melinda picked up two donuts and five large coffees for the office staff. She paid $5.93. What is the cost of one donut? What is the cost of one large coffee?

Answer 1

Let x = cost of one donut and y = cost of a cup of coffee

4x + 2y = 4.74

2x + 5y = 5.93

Multiply the second equation by -2:

4x + 2y = 4.74

-4x - 10y = -11.86

-8y = -7.12

y = $0.89 and x = $0.74

Answer 2

4d + 2c = 4.74

3d + 5c = 5.93

Can you sovle fhe system and answer?