Answer:
The first one (5+b)x8
Step-by-step explanation:
Answer
Answer:
21
Step-by-step explanation:
(9x2 + 6x – 7) + (-9x - 5) = 21
Answer:
3
Step-by-step explanation:
Answer:
You only have to sort (numbers with numbers and variables with variables) then do the operations (+/-).
Step-by-step explanation:

Answer:t= 9
Step-by-step explanation: 10t =90
divide 10 on both sides
so 10t /10 and 90/10
which means t=9