2.) solve each equation by subtracting a number from each side to isolate x.
a.) x+5= 12
b.) 15= x+6
c.) 19= 7+x

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

9.4.34  question   to estimate the height of a stone  figure, an observer holds a small square up to her eyes and walks backward from the figure. she stops when the bottom of the figure aligns with the bottom edge of the  square, and when the top of the figure aligns with the top edge of the square. her eye level is 1.811.81 m from the ground. she is 3.703.70 m from the figure. what is the height of the figure to the nearest hundredth of a  meter?

There are a total of 75 students in the robotics club and science club. the science club has 9 more students than the robotics club. how many students are in the science club?