Start with parenthesis so that will be 7x -21so then you will get 4x = 7x -21 then you will subtract 7x and 4x and you will get -3x = -21 and your answer is 7 because both numbers are a negative and that will equal a positive.
Answer:
9°
Step-by-step explanation:
-6 + 15 = 9
Answer:
a=-14
Step-by-step explanation:
hope this helps
The answer is 2.2 , you divide 99/45