42
89
22
(5a).7 = -23 7(5a) = -23 35a = -23 a = -23/35 a= -0.657 (3 d.p.)
Because it shows you where that the 3 is in the ten's and that the 7 is in the ones and then you know where to add the 2 and 3
42
-23+7=-16
s = 7, t = -3
23 + 3 + 17 + 7 = 50
60.
89
22
(5a).7 = -23 7(5a) = -23 35a = -23 a = -23/35 a= -0.657 (3 d.p.)
4 plus 3 equals 7
96
Because it shows you where that the 3 is in the ten's and that the 7 is in the ones and then you know where to add the 2 and 3
false. because 5plus 3 plus 7 equals, 15, and 15 plus three is not seven