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Finding the value of x when 3x + 5 = 35

3x + 5 = 35 In this situation, you would want to take away 5 to both sides. 3x + 5 - 5 = 35 - 5 3x = 30 Then you would want to divide both sides by 3 in order to get x on the left hand side of the equation. ...
NS
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How do you add or take away fractions? E.g: what is 1/3 + 3/4

1/3 + 3/4 First we make the denominator the same. i.e: we would multiple 1/3 by 4 and multiply 3/4 by 3 in order to get the same denominator. 4/12 + 9/12. Now you can add the numerator together as they have ...
NS
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Write (x-2)(x+4)=10 in the form ax^2 + bx + c = 0 and work out the values of a, b and c

We should begin by multiplying out the brackets. Firstly, multiply each term in the first bracket with the first term in the second bracket: x times x equals x 2 and -2 multiplied by x is equal to -2x. Next,...
TC
Answered by Thomas C. • Maths tutor
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White paint costs £2.80 per litre. Blue paint costs £3.50 per litre. White paint and blue paint are mixed in the ratio 3 : 2 Work out the cost of 18 litres of the mixture.

3:2 means there are 5 parts. So 18 litres can be divided by 5, and the price of each part worked out individuallly. 18 / 5 = 3.6 To work out how much the white paint costs: 3.6 x £2.80 = £10.08 £10.08 x 3 (a...
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Answered by Sophia H. • Maths tutor
3551 Views

How do I expand the following equation (x+4)(x+2)

When dealing with questions to do with expanding brackets, you must multiply every term in one bracket with all the others in the second bracket. So for this question, we can see we have 4 terms in total: Le...
HM
Answered by Henry M. • Maths tutor
20115 Views