Question 9. Sum of 417 and 1517 is (a) 1917 (b) 1117 (c) 1934 (d) 217
(a)
Fractions with same denominators can be added by simply adding the numerators and writing the common denominator as it is. ∴ 417+1517=4+1517=1917
Question 7 (ii) Without adding, find the sum:
1 +3 + 5+7 + 9 +11 +13+ 15 + 17+19
Solve for m: 8m6+5=7m