Respostas
respondido por:
3
A)13X - 12 = 9X + 16
13X - 9X = 16 + 12
4X = 28
X = 28 / 4
X = 7
B)12X + 21 = 10X + 16
12X - 10X = 16 -21
2X = -5
X = 5 / 2
13X - 9X = 16 + 12
4X = 28
X = 28 / 4
X = 7
B)12X + 21 = 10X + 16
12X - 10X = 16 -21
2X = -5
X = 5 / 2
respondido por:
1
13x - 12 = 9x + 16
13x - 9x = 16 + 12
4x = 28
x = 4/28
X = 7
12x + 21 = 10x + 16
12x - 10x = 16 - 21
2x = 5
x = 5/2
X= 2.5
13x - 9x = 16 + 12
4x = 28
x = 4/28
X = 7
12x + 21 = 10x + 16
12x - 10x = 16 - 21
2x = 5
x = 5/2
X= 2.5
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