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vichka [17]
3 years ago
5

What's the anwser to 5 6 7

Mathematics
2 answers:
timama [110]3 years ago
8 0
5.)
n=3x45
(3)(45)
n=135

6.)
643=4*160+n
643=(4)(160)+n
643=n+640
n+640=643
n+640-640
643-640
n=3

7.)
n=6*35 +4
(6)(35)+4
n=(6)(35)+4
n=214
ExtremeBDS [4]3 years ago
3 0
5: n=135
6: n=3
7: n=214
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<u>Step-by-step explanation:</u>

The given expression is (−81)(−9) .

The both numbers in the expression are negative numbers and they are given inside the brackets.

This means that, the negative numbers must be multiplied to get a final value.

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