Simplify the expression below:
3(7x) - 2(4 - x)

Step-by-step explanation:

21x - 8 + 2x

23x - 8

that's the answer

last option

step-by-step explanation:

given that δdef is right and isoceles,

assuming that side df is the hypotenuse means that de an ef are the other 2 sides that intersect at 90° and are of equal length.

because they are of equal length, we can say that they are congruent

because they intersect at 90°, their slopes must be opposite reciprocals.

only the last option satisfies these conditions.

pls refer ro the top for answer