Question

Factorise 15x + 35y - 40 z

Answer 1

15x + 35y - 40 z = 5 (3x + 7y -8z)

hope that helps
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Answer 2

For this case we have the following expression.

$15x + 35y - 40 z$

We must find a term of expression that is repeated in all terms.

We then have the number 5.

By doing common factor 5 in all the expression we have:

$15x + 35y - 40 z = 5 (3x + 7y - 8z)$

Answer:

The factored expression is given by:

$5 (3x + 7y - 8z)$