Joanne has 20 books on crafts and cooking. she has 6 more cookbooks than craft books. how many of each does she have?
1 answer:
Answer:
Crafts books: 7
Cookbooks: 13
Step-by-step explanation:
Let x be the crafts book
Let y be the cookbooks
Solve for x:
Plug x and y in: x + y = 20 Re-write: y = x + 6 Plug in x + 6 instead of y: x + x + 6 = 20 Combine like terms: 2x + 6 = 20 Subtract 6 from each side, so it now looks like this: 2x = 14 Divide each side by 2 to cancel out the 2 next to x. It should now look like this: x = 7
Solve for y:
Re-use an equation from above: y = x + 6 Plug in the value of x: y = 7 + 6 7 + 6 = 13 So, y = 13
I hope this helps!
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( I am not exactly sure if this is right so don't blame me if you get this wrong, I just tried to help.....) :T
