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Well, if it doesn't help, then people have been just fooling around doing algebra for about 3 thousand years ...
You can often solve without algebra: If apples cost $5/kilo, and about 8 apples weigh a kilo, how many apples can you buy for $7? Answer: 7/5 = 1.4 kg; 1.4*8 = 11.2 apples. Answer: about 11.
For more complicated problems (some of which can seem ridiculously artificial), the best way to get the answer is to write an equation: One ship leaves New York for Lisbon at 20km/h and another ship leaves Lisbon a day later for New York, going 25km/h. If the distance is 5400 km, when will they pass each other in mid-Atlantic?
While it is possible to figure this out without writing and solving an equation, after you become comfortable with algebra and solving equations it is much easier that way.
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How does solving a simpler problem help you solve the original problem?
You gain relevant insights from solving that one problem, and then you can use those insights to help guide you to the solution of the original problem.
How do flowcharts help building up algebraic expressions?
Because they add onto the expression with every step.
What mathematical skills are required to solve problems using proportions?
Three mathematical concepts are inherent to solving proportional equations. The first is algebraic operations, and using the same process on both sides of the parenthesis' expression. Other algebraic skills include cross-multiplication, division, and simplification of quantities. The second is an understanding of percent's and fractions, which can help visualize the proportions.
What are the two stages of problem solving?
1. Firstly you have to adress the problem. -What is the problem? -How did you encounter the problem? 2. Then you need to figure out how to get round the problem. -Can i reverse the problem? If not can somebody help me? -What are all the possible ways of solving the problem? Hope this helped.
Why might it be important to write algebraic expressions?
I could help when you are dealing wit a hidden variable and will help solve the question. The expression has no answer so it shows the work.
