Question

add the following expressions;
3a + 6b and a - 7b
anyone help please ​

Answer 1

Answer:

here is the answer

Answer 2

Answer:

4a - b

Step-by-step explanation:

VERTICAL METHOD

3a + 6b

a   -  7b

========

4a - b

========

HORIZONTAL METHOD

(3a + 6b) + (a - 7b) = 3a + 6b +a - 7b

= 3a +  a + 6b - 7b = (3a +  a) + (6b - 7b)

= 4a - b