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Please help 175-75=400 divide Z equals to_______.

Sagot :

175 - 75 = 400 ÷ z
       170 = 400 ÷ z
       170 = 400
         1        z
 170 × z = 400 × 1
     170z = 400
     170z = 400
      170     170
           z = 2.352941176