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Please HELP!!! What is the justification for the step taken from line 2 to line 3?



the subtraction property of equality
the multiplication property of equality
combining like terms on one side of the equation
the division property of equality

Please HELP What is the justification for the step taken from line 2 to line 3 the subtraction property of equality the multiplication property of equality com class=

Respuesta :

the subtraction property of equality

Answer:

A. The subtraction property of equality

Step-by-step explanation:

We have to find the rule applied to obtain line 3 from line 2.

Now, line 2 is -4x + 9 = 2x + 10 and line 3 is -6x + 9 = 10.

We can see that the only possible way to get line 3 from line 2 is by subtracting 2x from both the sides.

i.e.  -2x - 4x + 9 = -2x + 2x + 10

i.e. -6x + 9 = 10

Hence, the subtraction property of equality is the justification for getting line 3 from line 2.