25 +27 ubtracting an integer is the same a a) -4+9= d) 7 + 12 = 5 19 x.: 3-(-5) = 3+5=8 7. Transform each of the following subtractions into an 14 +8 2.7 O TRACTION OF INTEGERS its opposite. opp(b) a -4-5=- 3. Perform the following calculations. a) -8-12 = -20 d) -15+15= b) 5+9 e) -7 + 8 = 7) . Perform the following calculations. a) -7 + 12-14-9 = d) -5 + 13-9-7= . Perform the following calculations. b) 7-9 = e) 4+18= _ 1 . Perform the following calculations. a) (7-9 +12) + (-5+ 3-12) = -2 b) -7+4-9 + 14 = -8 e) 5-17 +5-21 = 14 and calculate the result. 1-5 = -13 f) c) 12--14= f) -5-17 = -3 -20 c) 6-15-3 + 34 = -18 f) 3-12-7+ 4 = 4 20 - c) (-7+4-12)-(7-2)= a) (3-9) + (-5-4)= b) (-7+4)-(2-9) = d) (-8+4)-(9-3) = 10 e) (-8+15) + (5-9) = 3 f) (-6+5)-(-7-5) = 11 25 b) (-6+ 18-25)-(4-9-5) = d) (-5-6+9) + (-7- 11 + 12) = 2)