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Expand and simplify fully 4(x - 2) - 2(3 - 5x)

Firstly, expand out the first bracket - 4x - 8 - 2(3 - 5x) Then the second bracket (remember a minus x a minus = a positive) - 4x - 8 - 6 + 10x Then finally group the like terms together - 4x + 10x - 8 - 6 =...
CR
Answered by Calum R. • Maths tutor
6065 Views

Rearrange y=(3x+5)/x to make x the subject

This question is asking us to make x the subject, so we’re aiming to end up with just x on its own on one side of the equation. Firstly, we need to get rid of the x on the bottom of the right-hand side, so t...
CK
Answered by Chloe K. • Maths tutor
8161 Views

Expand and simplify (x+4)(x-3)

We need to multiply out each bracket and it is best to do this systematically, multiplying each term in the left hand bracket by each term in the right hand bracket. (x+4)(x-3) = (X x X) + (X x -3) + (4 x X)...
EM
Answered by Eleanor M. • Maths tutor
33686 Views

There are 300 passengers on a plane, 7/20 of them are men, 30% are women, the rest are children. Work out the number of children.

300 x (7/20) = 300/20 x 7 = 15 x 7 = 105 = number of men on the plane. 300 x 0.3 = 90 (Or 300/10 x 3) = number of women on the plane. 105 + 90 = number of adults on the plane = 195. 300 - 195 = 105 = number ...
HT
Answered by Hannah T. • Maths tutor
5611 Views

2x + 4 > 16

Step 1- Get all the numbers on one side of the inequality sign and all the letters on the other side. Remember when a number is moved to the other side of an inequality, the sign infront changes from either ...
GW
Answered by Gemma W. • Maths tutor
3613 Views