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hichkok12 [17]
3 years ago
13

How many Solutions are there for -6(3x+2)=2x-5-20x-7

Mathematics
1 answer:
jeka57 [31]3 years ago
5 0

First of all, expand the left hand side:

-18x-12 = 2x-5-20x-7

Sum like terms on the right hand side:

-18x-12 = -18x-12

As you can see, the equation turned to be an identity: it doesn't matter which value for x you are choosing: you're evaluating the same expression in both sides, so they will always be the same.

In other words, you're asking: which value for x should I choose so that -18x-12 and -18x-12 evaluate to the same number? Well, obvisouly any value for x will do.

So, there are infinitely many solutions to this equation, namely ever real number is a solution of this equation.

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