Answer:
Step-by-step explanation:
Answer:
it would be 25 because...
Step-by-step explanation:
a+b=5 ...(1) and 3a+2b=20 ...(2)
Multiplying (1) by 2 and subtracting from (2), we get : a=10.
Putting a=10 in (1), we get : b=-5
Therefore, (3a+b) = 3 x 10+(-5)=30-5=25.
no promblem
(40 - x) ÷ 2
this is because we first deduct the difference