user1234536
28.06.2019 •
Mathematics
What is the value of r in the equation -3(4r - 8)=-36
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Ответ:
r=5
Step-by-step explanation:
-3(4r - 8)=-36
The first step is to distribute the -3
-3*4r -3*-8 = -36
-12r +24 = -36
Subtract 24 from each side.
-12r + 24-24 = -36-24
-12r = -60
Divide each side by -12
-12r/-12 = -60/-12
r=5
Ответ:
75
Step-by-step explanation:
A triangle can only have 3 angles that add up to 180 degrees. Subtract 70 and 35 from 180 to get 75.
180=x+70+35
180-(70+35)=x