simultaneous equations - 2x + y = 7 and 3x -y = 8

there are a few main ways to solve simultaneous equations: find an equal like term. In this case y and add or subtract the two equations together to isolate one of x or y. 

Another way of solving simultaneous equations is to find what one variable equals and then sub it to the other equation.

Answered by Josh M. Maths tutor

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work out the percentage increase from 80 - 280?


5x - 2 > 3x + 11


200 pupils are taking a school trip. Some are flying, some are taking the bus. There are three times as many boys going as girls. One third of the boys going are flying. How many boys are getting the bus?


Solve 5x – 2 > 3x + 11


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