please solve it as soon as possible
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Step-by-step explanation:
- first arrange the variables in an order of a , b, c.
- then solve as the problem is given
(I) 6a+9b-4c
(ii)12a+5b+16c
(iii)6a+17b+23c
(iv)-45a-32b-61c
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Answer:
(i) x+y+z
= 6a+8b+9c +2b-3a-6c +c -b+3a
= 6a+9b+4c
(ii) x-y+z
=6a+8b+9c-(2b-3a-6c)+c -b+3a
=6a+8b+9c-2b+3a+6c+c -b+3a
=12a+5b+14c
(iii) 2x-y-3z
= 12a+16b+18c-2b+3a+6c-3c+3b-9a
= 6a+11b+31c
(iv) 3y-2z-5x
= 6b-9a-18c-2c+2b-6a-30a-40b-45c
= 32b-65c-45a
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