Solve the problem using algebra.
1 Find the Celsius temperature(to the nearest degree when Fahrenheit temperature is 9 degrees by solving the equation 59= 9/5 C +32, where F is the Fahrenheit temperature (in degrees and C is the Celsius temperature.
2. A square plywood platform has a perimeter which is 7 times the length of a side , decreased by 12. Find the length of a side.
Solve the formula for the specified variable.
3. I =nE
______, for n
a. Seven times the difference of 7 and a number gives 70. find the number.
b. Ten less than three times a number is the same as five times the number. Find the number.
The solution shows how to set up and solve the equations for the word problem.