6r+7=13+7r
-6r -6r
7=13+r
-13 -13
-6=r
Hope that helps!
Answer:
-45
Step-by-step explanation:
-50 + 2a represents the sum of the constant -50 and twice the value of the variable a.
If a = 2.5, then -50 + 2a has the value -50 + 2(2.5) = - 50 + 5 = -45.
Step 1: Add together the known angles.
Step 2: Subtract the sum from 180°.
My apologies this is only for a reward to ask questions myself .
Answer:
Step-by-step explanation:
