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2 years ago

Consider the equation 7x+2(x+5)=9x+10.

Mathematics

1 answer:

Alexandra [31]2 years ago

6 0

Answer:

7*-5+2(-5+5)=-35

9*-5+10=-35

7*2+2(2+5)=28

9*2+10=28

Step-by-step explanation:

when plugging the x values in, you get the same answer for both equation, make the equation equal.

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i.e. multiply n with (n-1) then by (n-2) upto 1.

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Similarly $3!$ can be written as: $3 \times 2 \times 1$

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