Answer:
19
Step-by-step explanation:
12-n/7 = -1
Cross multiply
We have 12-n = -7
Collect like terms
12 + 7 = n
Therefore n = 19
Answer:
y = 
Step-by-step explanation:
Given
3x + 2y = 6 ( subtract 3x from both sides )
2y = 6 - 3x ( divide both sides by 2 )
y = 
Answer:
The first one is correct.
Step-by-step explanation:
I know a thing or two about a thing or two about powers of 10.
Answer:
69
Step-by-step explanation:
the answer is 69 bc it is correct
Answer:
30
Step-by-step explanation:
5*2*3-2*0 ( when we multiply any number with zero then the result is also zero)
30-0
30