the sum of 3 consecutive even integers is 45. which equation represents this? a. (x) + (×) + (x) = 45 b. (x) + (x+1) + (x+2) = 42 c. (x) + (x+12 + (x+4) = 42 d. (x) + (x+1) + (x+3) = 42 ( SHOW STEP BY STEP)