Answer:
a = -10
Step-by-step explanation:
-0.4a + 3 = 7
subtract 3 from each side
-0.4a + 3-3 = 7-3
-.4a = 4
Divide each side by -.4
-.4a/ -.4 = 4/-.4
a = - 10
Answer:
6x+18
Step-by-step explanation:
Multiply 3 to all the numbers on the parenthesis
Hope this helps!
Answer:
The total cost of producing 6 widgets is $231.
Step-by-step explanation:
Answer:
119
Step-by-step explanation:
