Respostas
respondido por:
7
-x +2999 = 7248
-x = 7248 - 2999 .(-1)
x = -7248 + 2999
x = -4249
________________________
47 + 38 + x = 110
x = 110 - 47 - 38
x = 110 - 85
x = 25
________________________
-2x - 1000 = 0
-2x = 1000 .(-1)
2x = -1000
x = -1000/2
x = -500
____________________________
2x-1000= 1500
2x = 1500 + 1000
2x = 2500
x = 2500/2
x = 1250
_____________________________
350x - 500 = 100x +750
350x - 100x = 500+750
250x = 1250
x = 1250/250
x = 5
-x = 7248 - 2999 .(-1)
x = -7248 + 2999
x = -4249
________________________
47 + 38 + x = 110
x = 110 - 47 - 38
x = 110 - 85
x = 25
________________________
-2x - 1000 = 0
-2x = 1000 .(-1)
2x = -1000
x = -1000/2
x = -500
____________________________
2x-1000= 1500
2x = 1500 + 1000
2x = 2500
x = 2500/2
x = 1250
_____________________________
350x - 500 = 100x +750
350x - 100x = 500+750
250x = 1250
x = 1250/250
x = 5
respondido por:
1
1)-x+2999=7248 -x =7248-2999=4249 x=4249 2)47+38+x=110 x=25 3)-2x -1000 =0 -2x=-1000 1000/2 x=500 4)2x-1000=1500 2x=1500+1000= 2x=2500/2 x=1250 5)350x-500=100x+750 350x-100x=750-500 250x=250 250/250 x=1
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