Find a - 2b + 3c diminished by a - 2b - 3c + d.

A-4b - 6c

B. 6c - d

C. 2a - 4b + d

A - 2b + 3c - (a - 2b - 3c + d)

Note that the exercise is asking for the negative form of the 2º equation, so we need to multiply it by (-1)

a - 2b + 3c - a + 2b + 3c - d

simplify the equation

(a - a) + (2b - 2b) + (3c + 3c) + (-d)

6c - d

B.