Of the following options, what could be a possible first step in solving the equation −7x − 5 = x + 3?

adding 7x to both sides of the equation
subtracting 5 from both sides of the equation
adding x to both sides of the equation
combining like terms, −7x + x = − 6x

In a certain pentagon, the interior angles are a,b,c,d,e where a,b,c,d,e are integers strictly less than 180. ("strictly less than 180" means they are "less than and not equal to" 180.) if the median of the interior angles is 61 and there is only one mode, then what are the degree measures of all five angles?

3x + 4y = 5 x- 3y = -7 solve by substitution

Aright cylinder has a diameter of 8 m and a height of 6m. what is the volume of the cylinder