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Answers by Gene G.

The way to type these in line is to use parentheses: 6/(y+1) + y/(y-2) = 6/(y+1) • y/(y-2) The common denominator for the addition is: (y-1)(y+2) 6(y-2)/(y-2)(y+1) + y(y+1)/(y-2)(y+1) = 6y/(y-2)(y+1) These denominators are all the...

We need variable names for the original sum and the amount each person receives: S, A, B and C   Pick the statements apart to find pieces that you can write expressions/equations for. "Amanda receives $1 plus ...: A = 1 + ... 1/3 of what is left. " What's...

Take is one small step at a time. Let their current ages be J, A and C.   The first statement is easy. "Jacob is 4 years older than Anthony": J = A+4   "Nine years ago..." Christopher was (C-9) and Anthony was (A-9) "Christopher...

Let S be the cost of one soda and P the cost of one popcorn. 4S + 3P = 27.25 5S + 6P = 47.00   Multiply the first equation by 2 and solve by elimination. 8S + 6P = 54.50 5S + 6P = 47.00   subtract   3S = 7.50 S= 2.50   Substitute...

The distance Zuza travels is 9 km east and 7 km north every 6 minutes. 6 minutes is 1/10 of an hour, so the distance he travels is 90t east and 70t north.   The airport is 3 km west and 5 km north from Krakow. You have to calculate the two distances, then add the distance to...

Let the number of 2-wheel and 3-wheel bikes be A and B. A + B = 27  (frames) The number of wheels required will be: 2A + 3B = 66 Substitution looks easier. A+B = 27 B = 27-A Substitute and solve for A 2A + 3B = 66 2A + 3(27-A) = 66 2A...

The first step is always to convert the English into equations to make it math problem. Read through the problem first to get the general idea of what's going on. With involved problems like this, look for things that you can write expressions or equations for, then figure out how to put...