Answer:
Step-by-step explanation:
When there is a ( + ) sign in front of an expression in a parentheses , there is no need to change the sign of each term in the expression. That means, the expression remains the same. Just, remove the parentheses.
⇒
Collect like terms
Move 60 to right hand side and change it's sign
Subtract 60 from 180
Divide both sides of the equation by 6
Calculate
Hope I helped!
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-2x +6 = 6
-2x = 6- 6
-2x =0
x = 0
Answer: The first one is 144 . The second one is C.
Answer: 33.4