How many solutions does the following equation have? 7 x - 5(2x - 4) - 8 = 15 - (3 - x) - 4x a. no solution
b. exactly one solution
c. at least two solutions
d. infinitely many solutions

In a two-digit number the units' digit is 7 more than the tens' digit. the number with digits reversed is three times as large as the sum of the original number and the two digits. find the number.

Rationalize the denominator- 12x/√x-10

Express -5 2/5 as an improper fraction.