How do u solve algebraic equations with variable on both sides

Mr. martin has 25 students in his class. 15 of his students are girls.

Which expression has the same value as - 18: (-9) -18:2 -12: (-3) -10:5 -8: (-4)

What the answer to these 3x-2a+5x+4a 6x-2x+8y-2y

What is the average rate of change of d (t) between 2 seconds and 6 seconds, and what does it represent?

9t - (3t+3) = 1 step by step

Lynda is flying her kite at the end of a 40m string. The string makes and angle of pie/4 with the ground. The wind speed increases and the kite flies higher until the string makes an angle of pie/3 with the ground.

What is the sum of the angles of a polygon with s sides is 2,520

Brooke is a high school graduate and makes $28,150 annually as an office assistant. Jake is acollege graduate and makes $31,380 annually as acustomer service manager at a clothing store. what is the difference in salary after 5 years?

Dilating a triangle changes the size of the triangle but does not change its shape. true or false?

Is it easier to add or multiply fractions? Explain your answer and give an example of each