solve x/2 + 11 = 15
whenever we solve an equation we want to get the unknown (x) alone on one side of the equals sign, but remember whatever we do to one sign of the equation, we have to do to the other. So lets start by subtracting 11 from both sides:
x/2 + 11 = 15
x/2 = 15 - 11
this then works out to
x/2 = 4
from here we can multiply both sides of the equation by 2:
x = 4 x 2
therefore x = 8
SP
Related Maths GCSE answers
All answers ▸A bag contains 8 oranges, 9 pears and 13 apples. What is the probability a pear is picked?
Make x the subject of the formula: 3x - 2 = y + 10
Solve x^2-5x+6=0
Mark buys a computer. A VAT of 10% is added to the price of the computer. He pays £246. What was the original price of the computer before VAT was added?