Respuesta:
Explicación paso a paso:
a)3x + 5 = 5x -13
+5 +13 = 5x - 3x
18 = 2x
x=9
b) 5(7-x) =31 - x
35 - 5x = 31 -x
35-31 = 5x-x
4 = 4x x=1
c)4(2 - 3x)=-2x-27
8 - 12x=-2x -27
8 + 27 =12x -2x
35 = 10x
x=35/10 ó x=7/2
(^▽^)
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Respuesta:
Explicación paso a paso:
a)3x + 5 = 5x -13
+5 +13 = 5x - 3x
18 = 2x
x=9
b) 5(7-x) =31 - x
35 - 5x = 31 -x
35-31 = 5x-x
4 = 4x x=1
c)4(2 - 3x)=-2x-27
8 - 12x=-2x -27
8 + 27 =12x -2x
35 = 10x
x=35/10 ó x=7/2
(^▽^)