Question

a)   5x + x = 39 – 311:39
b)   7x – x = 521 : 519 + 3.22 – 70
c)   7x – 2x = 617: 615 + 44 : 11

Answer 1

`a)5x+x=39-311:39`

    `6x=39-311/39=1210/39`

    `x=1210/39:6=605/117`

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`b)7x-x=521:519+3.22-70`

   `6x=521/519+66-70`

   `6x=34775/519-70`

    `6x=-1555/519`

    `x=-1555/519:6=-1555/3114`

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`c)7x-2x=617:615+44:11`

    `5x=617/615+4=3077/615`

     `x=3077/3075`