Please help me with this

Question: what is the value of x 4x-2= (-7) +5x. it would be greatly appreciated if someone could actually explain to me step by step

Mr.zimmerman invested $25,000 in an account that draws 1.4 interest, compouneded annually. what is the total value of the account after 15 years

The difference of two numbers is 40. find the numbers if 0.3 parts of one number is equal to 37.5% of the other one.