3 years ago

What is the greatest common factor of the terms in the expression 21x-18x+28xy

Mathematics

2 answers:

xeze [42]3 years ago

8 0

Answer:

x(3+28y)

Step-by-step explanation:

21x-18x+28xy

3x+28xy

x(3+28y)

OLga [1]3 years ago

4 0

Answer:

the greatest common factor is x.

Step-by-step explanation:

21, -18, and 28 do not have any shared factors

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Grace [21]

The shapes are similar.
When two figures are similar, the ratios of the lengths of their corresponding sides are equal.
Therefore,
$\frac{42}{(15 + 42)} = \frac{x}{10 + x}$

Simplify:
$\frac{42}{57} = \frac{x}{10 + x}$
Cross multiply:
42(10+x) = 57x
420 + 42x = 57x
420 = 57x - 42x
420 = 15x
x = (420÷15)
x = 28