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The unknowns of x and y are the same in each equation, allowing us to combine the two in order to find out their values.The substitution method can be used in most cases if the coefficient is the same wit...

First label your two simultaneous equations1)2x+y=42)3x+2y=6Then rearrange 1)1*) y=4-2xNow sub 1*) into 2)3x + 2(4-2x)=6and expand brackets and solve for x3x+8-4x=6-x=-2x=2Now sub x=2 into 1)2(2)+y=4y=0

To find the y value at A, we know that x is equal to zero. This can be put into the equation of the line so that 3(0)+2y=6. Therefore 2y=6, and to get the y value, we divide each side by 2, giving us y=3 ...

Let's denote the price of sausages as S as it's the only unknown.Let's use simple algebra to solve this.To find the total price of all of the items she purchased ( i.e. the value), we multiply price by th...

In my opinion, the best way to expand and simplify brackets is to use the FOIL method which stands for the following:F - firstsO - outersI - innersL - lasts.This means that you multiply the first numbers ...