Make X the subject of the equation (9x-7)/3 = 8y
To start solving a question like this you want to do it in a set of steps:
Step 1: Get rid of the division. To do thsi you need to do the opposite function. The opposite of division is multiplication so you multiply both sides by what you've divided by (in this case 3). So the equation would now read: 9x-7 = 24y
Step 2: Get 9X on it's own on To do this you need to get rid of the -7. The opposite function of subtraction is addition so you +7 to both sides. So the equation would now read: 9x = 24y+7
Step 3: Get X on it's own. 9x means 9 multiplied by X so you use the opposite function again, In this case you would divde both sides by 9 to get x on it's own. The equation would now read x = (24y+7)/9
RW
Related Maths GCSE answers
All answers ▸Using Algebra show that part of the line 3x + 4y = 0 is a diameter of the circle with equation (x^2) + (y^2) = 25
Solve the simultaneous equations: 5x + y =21 and x - 3y = 9.
Nancy is driving and makes a wrong turn. The satnav indicates that her journey will take an extra 7 minutes. Nancy drives at an average speed of 60km/h to the nearest 5km/h. What's the greatest possible distance traveled in this detour in km to 2.d.p?
Shape S is one quarter of a solid sphere. The volume of S is 576(pi)cm(^3). Find the surface area of S correct to 3 significant figures