Keioshi Keioshi

19-02-2015
Mathematics

Answered

Find an equation that has x=-57 as a solution ?
A. -4x+7=-5(x+10) E. 4x+7=5(x+10)
B. -4x-7=-5(x-10)
C. -4x+7=5(x+10)
D. 4x+7=5(x+10)

Answer :

Panoyin Panoyin

19-02-2015

B. -4x + 7 = -5(x - 10)
    -4x + 7 = -5x - 50
    +5x    +5x .
      x + 7 = -50
      -7    -7
   x = -57

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