Question

1.Add 5(7/8) + 6(9/10) + 7(8/9)and express the result in its lowest term.​

Answer 1

Step-by-step explanation:

5(7/8)=35/8

6(9/10)= 54/10

7(8/9)= 56/9

35/8+54/10+56/9= (45×35+36×54+40×56) /360=5759/360.

Answer 2

Answer:

$\underline{\bigstar\:\textsf{According to the given Question :}}$

$:\implies\sf 5\dfrac{7}{8} \:+ \:6\dfrac{9}{10} \:+ \:7\dfrac{8}{9}\\\\{\scriptsize\quad\bf{\dag}\:\:\texttt{we will add whole number separate and fraction separate}} \\\\:\implies\sf \bigg(5 + 6 + 7 \bigg) \:+ \:\bigg(\dfrac{7}{8} +\dfrac{9}{10} + \dfrac{8}{9}\bigg)\\\\\\:\implies\sf 18 + \bigg(\dfrac{7 \times 40 + 9 \times 36 + 8 \times 40}{360}\bigg)\\\\\\:\implies\sf 18 +\bigg(\dfrac{280 + 324 + 320}{360}\bigg)\\\\\\:\implies\sf 18 + \dfrac{934}{360}\\\\\\:\implies\sf 18 + \dfrac{231}{90}\\\\\\:\implies\sf 18 + 2\dfrac{51}{90}\\\\\\:\implies\sf 20\dfrac{51}{90}$

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Tips :

• Whenever you are solving problems of addition or subtraction of Mixed Fraction

• Don't change all fractions into improper fraction, instead of that

• Add or Subtract whole part different and Fraction part different

• If Fraction is improper then change it into mixed and add or subtract the whole part again with resultant whole part

• Then simply attach both, and answer is done