Wiki User
∙ 13y ago273
13+8 = 21 and 13*21 = 273
Wiki User
∙ 13y ago144
7+ what =63
309?
144, you add the plus numbers, then multiply it by the first.
144, you add the plus numbers, then multiply it by the first.
144
144
144 add the two numbers and multiply by the first 2(2 + 3) = 10 7(7 + 2) = 63 etc.
26
96
144
144
7+ what =63
If I am correct, 9 plus 7 equals 112.
309?
2 squared plus 2 x 3 = 10, 7 squared plus 7 x 2 = 63, 6 squared plus 6 x 5 = 66,8 squared plus 8 x 4 = 96 so 9 squared plus 9 x 7 = 81 + 63 = 144.
144, you add the plus numbers, then multiply it by the first.