Question

Find the difference.

Answer 1

Answer:

-2x-4

Step-by-step explanation:

(-7x-7y-4)-(-5x-7y)=-7x-7y-4+5x+7y=-7x-4+5x=-2x-4

Answer 2

Answer:

-2x - 4

Step-by-step explanation:

• (- 7x - 7y - 4) - (-5x - 7y)              Remove both sets of brackets
• -7x - 7y - 4 + 5x + 7y                   Notice the sign change in 6x and 7y Two minus signs multiplied together make a plus. Gather like terms.
• -7x + 5x - 7y + 7y - 4                   Simplify
• -2x - 4                                          Note the ys cancel out.