book Maths Puzzle Numerical Ability

Please help me solve this equation and show me how it was done so that I will be able to finish the rest of my homework.
-10b - 7 = 9

Read Solution (Total 0)

book Other Question

1/x-4 - 3/x square-16 + 2/2x+8 A cash box contained $12.25 in quarters, dimes, and nickels. If there were five more than twice as many dimes as nickels and one less than three times as many quarters as nickels, how many of each kind of coin was there?