Keioshi Keioshi
  • 20-02-2015
  • Mathematics
contestada

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)

Respuesta :

Panoyin
Panoyin Panoyin
  • 20-02-2015
B. -4x + 7 = -5(x - 10)
    -4x + 7 = -5x - 50
    +5x         +5x        .
        x + 7 = -50
            -7       -7
             x = -57
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