4(-x+4)=12 multi step equation

1

Step-by-step explanation:

4(-x+4)=12

first is to open the bracket giving u

-4x+16=12

since 16 is adding where it is when takrn to the other side it will be subtracting giving u

-4x=12-16

-4x=-4

x= -4/-4

x=1

you estimate that the angle of elevation to the top of the 86th floor (the observatory) is 82 .the total height of the building is another 123 meters above the 86th floor.

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