What property is (67+83)+32=(32+67)+83
1 answer:
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Answer:
Step-by-step explanation:
Putting x = 1
=>
Given that f(1) = 1
=>
=> -------------------(1)
Now,
Putting x = 2
=>
Given that f(2) = 5
=>
=>
=> ----------------(2)
Subtracting (2) from (1)
For b , Put a = 9 in equation (1)
If and
, then you can replace
in either equation with the equivalent expression given by the other equation. In this case, you have
and you can solve for .
Then .
For the second system, you can write
Then substitute this into the second equation and you get
so that