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5(x/5 + 2x) = 5(16 - x) 3x+5 = -2( 1 - 2x)
x + 10x = 80 - 5x 3x+5 = -2 + 4x
x + 10x+5x= 80 3x-4x= -2-5
16x = 80 -x = -7
x=80/16 x = -7/-1
x= 5 x = 7
Comprobación.....
x/5+2x=16-x 3(7)+5=-2(1-2x)
5/5+10=16-5 21+5= -2(1-2(7))
1 + 10=11 26= -2(1 -14)
11=11 26 = -2 + 28
26 = 26 Listo!!!!