Answer:

Step-by-step explanation:
Given , value of x = 12
To find : Value of the given expression
Given expression = 
plug the value of x

Subtract 7 from 12

Hope I helped!
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Answer:
Perpendicular
Step-by-step explanation:
Perpendicular lines meet at a 90 degree angle.
Answer:
Step-by-step explanation:
3(y-6)=3y-18
which can be expressed as
2y-18+y
Answer: (4a - 3b)2
Step-by-step explanation:it stays the same because there is no like terms
An equation is a mathematical statement that shows the equal value of two expressions while an inequality is a mathematical statement that shows that an expression is lesser than or more than the other.