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Solve 5(x + 3) < 60

For this we must expand the bracket:5(x+3)= 5x+15and then we rearrange for 'x':x&lt;9
OA
Answered by Othman A. • Maths tutor
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What is the simplified expression of: 3a - a x 4a + 2a? And what rule do we use to carry out the simplification?

To simplify the expression we use B(rackets)I(nidices)D(ivision)M(ultiplication)A(ddition)S(subtraction) in this specific order.Hence, here the first thing we need to do is identify each element of BIDMASS. ...
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Answered by Othman A. • Maths tutor
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Solve the following pair of simultaneous equations; 10x+4y=15, 2x+y=7

So, to solve these equations, you must choose the variable you want to work with, in this case let's go with y. Make sure that you write out every step of your working so it is easy to follow and minimises m...
JH
Answered by Jung H. • Maths tutor
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Express as a simple logarithm 2ln6 - ln3 .

We start with: 2ln6 - ln3 ... First, we rewrite this expression as: ln6 + ln6 - ln3 ... Next, we rewrite this as: ln(2 3) + ln(2 3) - ln3 ... Using the log rule log a xy = log a x + log x y, we express this ...
Answered by • Maths tutor
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There are 13 apples in a crate of apples. Mark orders six boxes of apples, how many apples did he order?

Mark ordered 78 apples, this is because there are 13 in each of the six boxes he ordered. On your calculator 6x13=78, therefore he ordered 78 apples.
RJ
Answered by Ruth J. • Maths tutor
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