Simplify: –4(x – 2) – 5(y + 2) + (–3)(8 – 6b)

–4x – 5y – 18b – 22

–4x – 5y + 18b – 6

–4x – 5y + 18b + 6

–4x – 5y + 18b – 26

What can each term of the equation be multiplied by to eliminate the fractions before solving? x – + 2x = + x 2 6 10 12

If m∠abc = 70°, what is m∠abd? justify your reasoning.  using the addition property of equality, 40 + 70 = 110, so m∠abd = 110°.  using the subtraction property of equality, 70 − 30 = 40, so m∠abd = 30°.  using the angle addition postulate, 40 + m∠abd = 70. so, m∠abd = 30° using the subtraction property of equality.  using the angle addition postulate, 40 + 70 = m∠abd. so, m∠abd = 110° using the addition property of equality.

What is the difference between the equations of a vertical and a horizontal line?