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Solve: a) 5t + 17 = 2 b) x^3 - 25 = 103 - x^3

a) Solving for t: We isolate our unknown t on one side, to leave the factors of t on one side and the numbers on the other: -1st step: substract 17 from both sides --> 5t = -15 -2nd step: divide by 5 on b...
LC
Answered by Luis C. • Maths tutor
4046 Views

Dave and Chris split £24 in the ratio 2:1, how much does each person get?

With ratio questions we first have to look at the ratio split that the question wants. In this case is is 2:1, first sum up the two numbers that make the ratio, 2 and 1, to get 3. Then divide the number that...
MC
Answered by Matthew C. • Maths tutor
34588 Views

If 3x+6x+3=21, find the value of x

To start, i would put all the x's on one side of the equation and the two numbers on the other side of the equation. However be careful when moving the 3 as when we move it over the equals symbol its sign in...
HC
Answered by Henry C. • Maths tutor
5832 Views

2.5 x 100

250
SR
Answered by Sara R. • Maths tutor
6839 Views

Expanding and simplifying, e.g. (x+4)(x-2)

To break this down easily we can use a technique called a 'Farmers Field' ! Drawing a box with a cross through the middle to make 4 mini boxes, we can then use each mini box to write out each part of the ans...
JH
Answered by James H. • Maths tutor
4183 Views