Note: Although, the equation is read right to left, each number is read left to right (just as you would read a number written in standard numerals). You can find the answer below, just scroll down!
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The answer is 7000.

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٧١٥٢ is 7152

٥ is 5

١٥٧ is 157

The equation is read from right to left so you read it as:

7152 + 5 – 157 = 7000