You need to solve a system of equations. you decide to use the elimination
method. which of these is not allowed?
2x-3y = 12
-x + 2y = 13
equation 1
equation 2

Solve this equation using substitution. {4x + y = −2} {4x + 6y = 44}

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.

    choose the correct definition for  extremo.  a.  end      b.  extra      c.  extract      d.  eventual