10. Simplify the following:
(i) (x + 10x-9) + (5x-15)-(-4x +9)
(ii) (11mri +10mn-3)-(-m - 6 mn-11)
+ (-mrt + 10)
(iii) (5x^y - 10x + y - 11) - (5x - 3y)
-1-9x7+4)
(iv) -(9x - 4y + 7) + (-8x - y - 10)
- (-5% -16)
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Step-by-step explanation:
1. (x+10x-9) + (5x-15) - (4x + 9)
=> 11x - 9 + 5x - 15 - 4x - 9. {here brackets are opened}
=>12x - 34
=>x = 17/6
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