V or x is something so if you add 9 to get 8 then you must subtract 9 from 8 to get -1 which would be your answer
√(3*15)=√45=√[5*3^(2)]=3√5
Answer:
£16.50
Step-by-step explanation:






X + 7x = 56 + 8
Simplifying x + 7x = 56 + 8 Combine like terms: x + 7x = 8x 8x = 56 + 8 Combine like terms: 56 + 8 = 64 8x = 64 Solving 8x = 64 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Divide each side by '8'. x = 8 Simplifying x = 8