First, did you mean 4y - 6x = 15?
Answer:
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Step-by-step explanation:
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Remember to use your exponent rules
The second one is the write answer
If one U.S. dollar is as much as 1.68 Swiss francs, then 79,00 U.S. dollars will be as much as 79,00 * 1,68, which is 132,72 Swiss francs.
I hope it will help :)