A) only (i)
B) (i) and (ii)
C) (i), (ii) and (iii)
D) (i), (ii) and (iv)
Correct Answer: D
Solution :
(i) \[2x-5+3x=10\] \[\Rightarrow \,\,5x=15\] \[\Rightarrow \,\,x=3\] (ii) \[-x+7=2\times 2\Rightarrow -x=4-7\Rightarrow x=3\] (iii) \[4x=17+11\Rightarrow x=28\div 4=7\] (iv) \[9=-x+1+11\Rightarrow -x=9-12\Rightarrow x=3\]You need to login to perform this action.
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