Find the difference. (3a - 6b +12)- (6a - 2b+ 7). Show all steps. PLEAS HELP ITS FOR A TEST

-3a-4b+5

(3a - 6b +12)- (6a - 2b+ 7).

step 1: remove parentheses and change 2b +7 to 2b -7 and 6a -2b to 6a +2b

3a - 6b +12- 6a + 2b- 7

-3a-4b+5

step 2: from 3a - 6b +12- 6a +2b- 7

subtract: 3a - 6a= -3a.

now its -3a - 6b + 12 - 6a + 2b - 7

then 6b - 2= 4

now is -3a - 4b + 12 - 7

then 12 - 7 =5

-3a-4b+5

sorry is messy

answer: 42

use a calculator to find that 845/73 = 11.575

the whole part of the answer is 11. multiply this by 73 to get 11*73 = 803.

subtract that result from 845 to get 845 - 803 = 42

7,24

step-by-step explanation: