Make sure you are confident in calculating with negative numbers, which is a skill often needed to solve equations. To solve the equation, do the inverse operation. The inverse of multiplying by 12 is ...

2. Graphical Method: The graph of a pair of linear equations in two variables is represented by two lines. (i) If the lines intersect at a point, then that point gives the unique solution of the two ...

It’s the sort of easy maths problem that you can work out in a few minutes using pencil and paper, but physicists in China, Canada and Singapore have now solved pairs of linear equations like this one ...

⇒x = 7 + 2 (by transposing 2 to R.H.S.) ⇒y = 10 − 3 (by transposing 3 to R.H.S.) ⇒y= 7. 1.6 = y/1.5 ⇒1.6 x 1.5 = (y/1.5) x 1.5 [On multiplying both sides by 1.5] ...