Question

Q.which of the following is not equivalent to -6/21

a.20/-70 b.10/-35 c.-9/24 d.-26/91

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Answer 1

Answer:

c.-9/24

Step-by-step explanation:

this is the right answer

Answer 2

Answer:

ok

Step-by-step explanation:

we just have to compare them using cross multiplication. if the values in the RHS and LHS came same, that means the number is eqiuvalent to -6/21

(a)$\frac{-6}{21}$ = -$\frac{20}{70}$

Cross multiply

21 × 20 = -70 × -6

420 = 420   ( as (-) and (-) when multiplied become (+)

LHS = RHS , means 20/-70 is equivalent to -6/21

(b)$\frac{-6}{21}$ = - $\frac{10}{35}$

Cross multiply

-6 × -35 = 21 × 10

210 = 210      ( as (-) and (-) when multiplied become (+) ]

LHS = RHS , hence they are equivalent

(c) $\frac{-6}{21}$ = $\frac{-9}{24}$

Cross multiply

21 × -9 = -6 × 24

- 189 = -144

LHS is not equal to RHS

means this is your answer⇒ (c)

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