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Combine the x terms since they are like terms and combine the constant terms since they are like terms.
x + 3x = 4x
9 + 7 = 16
4x + 16
Hopefully this helps and let me know if you need more help!
Answer:
-6
Step-by-step explanation:
7k − 5k + 8 = −4
2k+8=-4
-8 -8
2k=-12
/2 /2
k=-6
<u><em>Check!</em></u>
7(-6)-5(-6)+8
-4=-4
Answer:
Substitution Property of Equality
Step-by-step explanation:
The substitution property of equality states that if x = y, then x can be substituted in for y in any equation, and y can be substituted for x in any equation.
In this case, m∠A + m∠B in the second equation is substituted by 88°, from the first equation. This allows as to find m∠C as follows:
88° + m∠C = 150°
m∠C = 150° - 88° = 62°
