Solve 3x - 5 = 13
Algebra can be tricky to get a hold of but once you've worked through a few questions, you'll quickly get the hang of it!The aim of this question is to find x, that means the solution will look like this: x = _. This shows us that we have to get x on one side of the equals sign and everything else on the other. Remember that whatever we do to one side of the equation, we have to do to the other (so the equation is still equal at the end!). We'll work through the equation step-by-step, and write down what we are going to do to each side of the equation on the left-hand-side:3x - 5 = 13(plus 5 to get the 3x on its own) 3x - 5 + 5 = 13 + 53x = 18(divide by 3 to get x on its own) x = 18/3x = 6
TD
Related Maths GCSE answers
All answers ▸Matt had 3 piles of coins, A, B and C. Altogether there was 72p. Pile B had twice as much as pile A. Pile C had three times as much as pile B.
Line segment AB is drawn between point A(-3, 3) and point B(-1, -1). Work out the gradient of the line segment AB, then find the equation of the graph.
There are only 7 blue pens, 4 green pens and 6 red pens in a box. One pen is taken at random from the box. Write down the probability that this pen is blue.
There are 720 boys and 700 girls in a school. The probability that a boy chosen at random studies French is 2/3 The probability that a girl chosen at random studies French is 3/5 . Work out the number of students in the school who study French.