Which property of equality justifies the step for solving the equation that is displayed?

3z2−5=10

3z2−5+5=10+5

3z2=15

5 answers

The property of equality that justifies the step in solving the equation is the addition property of equality.
Which property of equality justifies the step for solving the equation that is displayed?

(3z)/(2)-5=10

(3z)/(2)-5+5=10+5

(3z)/(2)=15

Multiplication Property of Equality

Subtraction Property of Equality

Addition Property of Equality

Division Property of Equality
The addition property of equality justifies the step for solving the equation.
How many solutions will the equation 2/3(6m+9)−6=4m have

one solution

two solutions

infinite/many solutions

no solution
The equation 2/3(6m+9)−6=4m will have one solution.