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maria [59]
3 years ago
13

Is 20 ÷ (x + 2) = 5 a equation or expression?

Mathematics
2 answers:
Allushta [10]3 years ago
8 0
This is an EQUATION, because it has a left side, a right side, and an = sign separating the two.

An EXPRESSION does not has "sides" and no = sign.
adell [148]3 years ago
7 0
This is an equation because it equals 5.

Expressions have no sign. For ex. 12/ (x+2). That would be simplified.

You could solve this equation too.
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L(x,y,z,\lambda)=xy^2z^2+\lambda(x+y+z-5)

L_x=y^2z^2+\lambda=0
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In the first octant, we assume x,y,z>0, so we can ignore the caveats above. Now,

x+y+z=5\iff x+2x+2x=5x=5\implies x=1\implies y=z=2

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