Question

Add the following both horizontal and column methods:
(a) 10x + 9y and x + y
(b) x+
(c) 5x + 6y + z and 5x - y - z
• (d) 5x​

Answer 1

Explanation:

10x+x+9y+y

=11x+10y

x+5x

=6x

5x+6y+z+5x-y-z

=5x+5x+6y-y+z-z

=10x+5y