Answer:
Step-by-step explanation:Answer from edmentum
<span>The nine ways to pay 45p are:
Two 20p and one 5p
One 20p, two 10p and one 5p
One 20p, one 10p and three 5p
One 20p and five 5p
Four 10p and one 5p
<span>Three 10p and three 5p
Two 10p and five 5p
<span>One 10p and seven 5p
Nine 5p
There are 13 ways to pay 50p:
</span></span></span>Two 20p and two 5p
One 20p, two 10p and two 5p
One 20p, one 10p and four 5p
One 20p and six 5p
Four 10p and two 5p
Three 10p and four 5p
Two 10p and six 5p
One 10p and eight 5p
Ten 5p
Two 20p and one 10p
One 20p and two 10p
Five 10p
<span>One 50p</span>
Answer:
Step-by-step explanation:
Comment
He added 42 to both sides of the equation. What that did is eliminated 42 on the left and changed the value on the right. Now what he has is the unknown on the left and an integer on the right.
The answer would be (x-5+y) (x-5-y)
