2.13x = 21,300,000
x = 21,300,000/2.13 = 10,000,000 = 10^7
2.13× blank = 21,300,000 what power of 10 would make this equation true
2 answers
Another way of doing this is to start at the decimal point and count how many digits you must move the decimal point to get to the end. That is 7 so it's 2.13E7