Question

7. If'+' means 'X', 'X' means '+',''
means '-' and '--' means '+' then
what is the value of
17 + 15 - 135 x 9 : 70?
(a) 270
(b) 240
(c) 170
(d) 200

please answer fastly it's very important I don't understand it please you can tell with step by step​

Answer 1

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