Question

(x+7,9):48-0,02=15,7 (х-56,3):7-25,015=306,3.

Answer 1

(х+7.9)÷48=15.7+0.02
(х+7.9)÷48=15.72
х+7.9=15.72×48
х+7.9=754.56
х=754.56-7.9
х=746.66                                 

Answer 2

1) х+7,9=15,7*(48-0,02)
     х+7,9=753,6-0,314
     х+7,9=753,286
     х=745,386
2) х-56,3=2144,1-7662,0945
    х-56,3=-5517,9945
    х=-5461,6945