Top answers

Maths
GCSE

Calculate the value of both x and y using the following 2 equations: 3x - 2y = 12 (1) and x - y = 3 (2)

Process of elimination:

Multiply equation 2 by 3 to get the same coefficent in front of x:  3x - 3y = 9  (3)

Subtract eq 3 from eq 1 to get:  y = 3

HM
Answered by Hamza M. • Maths tutor
8497 Views

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 s...

LC
Answered by Luis C. • Maths tutor
3596 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 t...

MC
Answered by Matthew C. • Maths tutor
32008 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...

HC
Answered by Henry C. • Maths tutor
5056 Views

2.5 x 100

250

SR
Answered by Sara R. • Maths tutor
5844 Views

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