solve the following equation: 7x + 8 = 2(6x -2)
first of all it is best to get rid of the brackets. You do this by times each component in the bracet by the number on the outside in this case it is 2.
7x + 8 = 12x - 4
then you want to get all the x's on one side and the numbers on the other side. to do this, i added 4 to both sides and -7x from both sides. I did this so there was no negative numbers on eitherside to make it a little easier.
12 = 5x
the next step is to get x on its on. you do this by deviding both sides by 5, there fore;
x = 12/5
KB
Related Maths GCSE answers
All answers ▸Find g(f(x)) where g(x)=2x+4 and f(x)=x^2+1.
There is a cube with a length 3x. The expression for the volume in cubic centimeters is equal to the expression for the surface area in square centimeters. Calculate the length of a side of the cube.
There are 30 balls in the bag, 10 of which are blue. Adam takes 2 balls out of the bag without a replacement and calculated that there is a probability of 0.2 of both balls being blue. What percentage error did he make compared to the true probability?
What is the Pythagoras Equation?