Solve the following equations for the given variable:

1. 3x=21, x=

2. X+3=15, x=

3. 15-x=12, x=

4. X-5=52, x=

5. 3+x=23, x=

6. X/5 = 25, x=

7. 25/x = 5, x=

There are 12 nickels, dimes and quarters whose total value was 1.55 the number of nickles exceeds the number of quarters by 1, how many of each coin was there

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What is the probability that a number cube is rolled and the outcome is a three or a four

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F=9/5c+32 expresses the relationship between celcius and fahrenheit. Slove for c

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If the original quantity is 4 and the new quantity is 7, what is the percent increase

How I can simplifying 28x13x25