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Set up equations and solve them to find the unknown numbers in the following cases: (a) Add 4 to eight times a number; you get 60. (b) One fifth of a number minus 4 gives 3. (c) When I subtracted 11 from twice a number, the result was 15. (d) Munna subtracts thrice the number of notebooks he has from 50, he finds the result to be 8.

Text Solution

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a) 8x+4=60
8x=56
x=7
b)`x/5-4=3`
`x/5=7`
x=35.
c)`3/4x+3=21`
`3/4x=18`
...
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