Answer:

Step-by-step explanation:
Lets say there's a number 'x' and there's an expression
where 'a' & 'b' are also numbers , <u>the simplified form of the expression is </u>
<u>.</u>
So ,
Answer:
81
Step-by-step explanation:
27 total of pupils.
girls 1×27=27
boys 2×27=54
total 54+27=81
Answer:
f(x)= -7x+7
Step-by-step explanation:
Answer:
There were 12 babies and 4 adults