Question

Calculate the following:
(a)-4/5*3/7+4/5*3/7
(b)1/2*5/6+1/3*1/4

Answer 1

Answer:

a) -4/5 × 3/7 + 4/5 × 3/7

-12/35 + 12/35 = 0/35

b) 1/2 × 5/6 + 1/3 × 1/4

5/12 + 1/12 = 6/12 = 1/2

Answer 2

Answer:

(a)  $\frac{-4}{5}$ × $\frac{3}{7}$ + $\frac{4}{5}$ × $\frac{3}{7}$

    = $\frac{-12}{35}$  + $\frac{12}{35}$

    = 0

(b)  $\frac{1}{2}$ × $\frac{5}{6}$ + $\frac{1}{3}$ × $\frac{1}{4}$

    = $\frac{5}{12}$   +   $\frac{1}{12}$

    = $\frac{6}{12}$ = $\frac{1}{2}$