The price of an oven was increased by 20% to £156. What was the price before the increase?

answer and get 20 points + thanks

Solve the equation for x.3(6x - 1) = 12 i've tried doing the math and i can't find out what i'm doing wrong

I’m on question 7 it says a covered water tank is in the shape of a cylinder the tank has a 28 inch diameter and a height of 66 inches to the nearest square inch what is the surface area of the water tank

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab