Can you solve 18-7x < 12-3x ?

In order to solve this formula, you would need to collect similar terms to the same side and then simplify to work out the value of 'x'. We can do this by collecting all the 'x' terms to one side first, treating the less than sign or '<' as if it were an equals sign. The first thing we would do is add '7x' to both sides. This would leave us '18 <12+4x", and now we only have 'x's on one side.  The next thing we would do is get all the intergers on one side. We could do this by taking away 12 from both sides. This would leave us with '6 <4x'. Now we have separated the intergers and the 'xs', we can simplify. All we need to do now is divide both sides by 4, which would leave is with the equation '6/4 < x' or '1.5 < x'. This tells us that x is greater than 1.5.

BF

Related Maths GCSE answers

All answers ▸

3 postitive whole numbers have a mean of 6. What is the greatest possible range of the numbers?


Jill takes out a loan of £6000 to get a car. The loan has a compound interest of 3% and she takes it out for 4 years. a) How much interest has Jill accrued after 2 years? b) What is the total amount to be paid after 4 years?


x^2 - 10x + 33 ≡ (x - a)^2 + b. Work out the value of a and b.


A group of 55 pupils were asked if they owned a phone or a tablet.11 people are known to own both18 said they only owned a tablet34 said they owned at least a phoneA student is picked a random, what is the probability that the student doesn’t have a phone