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The area of a square is the length of one side squared (multiplied by itself), so for a square with side length 3, the area will be 3² or 3 x 3, which = 9. For a square with side length x, the ...

There are two easy ways to solve simultaneous equations. Substitution and elimination. In order to work with substitution we must rearrange one equation to be equal to either x or y. In this case, 2x+4y=8...

Equation 1: x+y=3Equation 2: -x+5y=-15Step 1: Check to see if any variables (x or y) can be eliminated. As there is x in equation 1 and -x in equation 2, x can be eliminated by adding the equations togeth...

7x < -2 + 2x5x < -2x< -2/5

In my opinion the easiest way of approaching simultaneous equations is to first number your equations. 5x+2y=82x+y=7This helps avoid confusion later in the working. Next choose the variable you want to s...