exam Maths Puzzle Numerical Ability

If 1/2x+12=4, what is the value of x?

Read Solution (Total 0)

exam Other Question

"If 5 to the 21st power * 4 to the 11th power = 2 * 10 to the nth power, what is the value of n?"

With a calculator, the answer is 21. However, I would appreciate knowing how to solve this problem without a calculator. Thank you. How do you change slope intercept equation like y=-3/4x+3 into a standard equation?