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Maths
GCSE

How do you subtract a mixed fraction from another?

When dealing with with mixed fraction operations, the first step is always to change the mixed fraction into a top heavy fraction. Then consider weather the question is a multiplication, divsion, addition...

CL
3641 Views

Solve the following pair of simultaneous equations: 1. 3x + 2y = 9 2. 6x + 5y = 21

We can solve this pair of simultaneous equations using substitution. To do this, we firstly have to rearrange one equation to get one variable on its own. For example, we can subtract 2y from each side of...

MC
Answered by Mark C. Maths tutor
4326 Views

If m=a^x, n=a^y, and a^2 =(m^y n^x)^z Show xyz=1.

If m=ax n=ay and a2 =(my nx)z Show xyz=1.        

    The above question is an indices question from an AS textbook. This is questi...

JJ
Answered by Joshny J. Maths tutor
17327 Views

(8/125)^(-2/3)

Denominator of the power expression indicates the degree of the root in this case its the cubic root. Numeriator denotes the degree of power in this case squared. The negative sign means to inverse the ba...

AD
Answered by Andrew D. Maths tutor
9012 Views

Solve (3x +1)/x + (2x-1)/3 = -3, giving x to two decimal places.

(3x+1)/x +(2x-1)/3 = (2x2 + 8x + 3)/3x by cross multiplying.

So equation becomes 2x2+ 8x + 3 = -9x by multiplying both sides by 3x. Adding 9x to both sides gives 2x2

JA
Answered by Jorge A. Maths tutor
4308 Views

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