Factorise the expression 42s-77
To factorise the expression 42s - 77, we need to find the common factors of both terms.
The factors of 42s are 1, 2, 3, 6, 7, 14, 21, and 42
The factors of 77 are 1, 7, 11, and 77
The highest common factor of both terms is 7, so we can factorise the expression as:
7(6s - 11)