+168 y = 5(x + 2)
to make x the subject do I need to multiply out the brackets first?
thanks
y = 5(x + 2)
y = 5x + 10 subtract 10 from both sides
y - 10 = 5x divide both sides by 5
[y - 10] / 5 =x, or:
x = [y - 10] / 5
You could also do this:
y = 5(x + 2) divide both sides by 5
y/5 = x + 2 subtract 2 from both sides
y/5 - 2 = x, or:
x =y/5 - 2 Note: Even though they look different, but in fact they are exactly the same.
y = 5(x + 2)
y = 5x + 10 subtract 10 from both sides
y - 10 = 5x divide both sides by 5
[y - 10] / 5 =x, or:
x = [y - 10] / 5
You could also do this:
y = 5(x + 2) divide both sides by 5
y/5 = x + 2 subtract 2 from both sides
y/5 - 2 = x, or:
x =y/5 - 2 Note: Even though they look different, but in fact they are exactly the same.
