x - [a - {a-(y - 【a - b】) + 2b} + b] please help me fast. i will be very thankful to u
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Step-by-step explanation:
simply multiply the sings
- +,+ is + ,
- +,- is - ,
- - , - is +
vise versa.
than add & subtract the variables. (i.e +b -2b+b = 0)
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