Solving equations with unknown in both sides

Given, 8x - 8 = 2x + 10

Solution: To solve this kind of problem, the first step is to always collect the like terms together i.e. Take the terms with x to one side of the equal sign and the numbers to the other side.

Recall: When terms cross the equal sign, their sign (+ or -) changes.

8x - 8 = 2x + 10

8x - 2x = 10 + 8

6x = 18

Now divide both sides by 6

6x/6 = 18/6

x = 3.

So always remember, collect like terms, simplify and then solve for the unknown.

YS

Related Further Mathematics GCSE answers

All answers ▸

The equation of the line L1 is y = 3x – 2 The equation of the line L2 is 3y – 9x + 5 = 0 Show that these two lines are parallel.


Factorise the following quadratic x^2 - 8 + 16


The circle c has equation x^2+ y ^2=1 . The line l has gradient 3 and intercepts the y axis at the point (0, 1). c and l intersect at two points. Find the co-ordinates of these points.


Given that xy=2 and y=3x+5, find x and y. Do not use trial and improvement.