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 ▸

For the equation y=2x+7, what is the gradient and the y intercept?


£3000 is invested for 2 years at 3.8% per annum compound interest. What is the total interest earned over the 2 years?


In a class there are 57 students. Of these 32 study Spanish, 40 study German and 12 students study neither. How many students study Spanish but not German?


Jessica buys 10kg of chocolate for £20. She divides them into 500g bags which she sells for £1.30 each. Given that Jessica sells all her chocolate, what is her percentage profit?