Question

+ means ÷, – means ×, ÷ means + and × means –, then which of the following equations is

correct?

(1) 2 – 40 + 10 ÷ 6 × 8 = 5 (2) 20 ÷ 7 – 30 + 6 ÷ 2 = 43

(3) 10 – 2 ÷ 4 × 10 + 5 = 32 (4) 10 ÷ 5 – 4 × 18 + 13​

Answer 1

Answer:

No one is correct equation.

Step-by-step explanation:

Given that ;

+ means ÷

- means ×

÷ means +

× means -

Now,

Coming to the equations ;

1) 2 – 40 + 10 ÷ 6 × 8 = 5

Let's simplify LHS first,

⇒ 2 × 40 ÷ 10 + 6 - 8

⇒ 2 × 4 + 6 - 8

⇒ 8 + 6 - 8

⇒ 14 - 8

⇒ 6

Here, 6 ≠ 5

Hence, this equation is incorrect.

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2) 20 ÷ 7 – 30 + 6 ÷ 2 = 43

Let's simplify LHS first,

⇒ 20 + 7 × 30 ÷ 6 + 2

⇒ 20 + 7 × 5 + 2

⇒ 20 + 35 + 2

⇒ 57

Here, 57 ≠ 43

Hence, this equation is incorrect.

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3) 10 – 2 ÷ 4 × 10 + 5 = 32

Let's simplify LHS first,

⇒ 10 × 2 + 4 - 10 ÷ 5

⇒ 20 + 4 - 2

⇒ 24 - 2

⇒ 22

Here, 22 ≠ 32

Hence, this equation is incorrect.

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4) 10 ÷ 5 – 4 × 18 + 13 = 24

Let's simplify LHS first,

⇒ 10 + 5 × 4 - 18 ÷ 13

⇒ 10 + 20 - 18 ÷ 13

⇒ 30 - 18 / 13

⇒ 372 / 13

⇒ 28.61

Here, LHS ≠ RHS

Hence, this equation is also incorrect.

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Conclusion : Not a single equation is correct according to the given conditions.