Respuesta:
4(2x) = 5x + 9
8x = 5x + 9
3x = 9
x = 3
__________________
7x + 21 =4x
_____
2
7x + 21 = 8x
21 = x
espero haberte ayudado ^^!
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Respuesta:
4(2x) = 5x + 9
8x = 5x + 9
3x = 9
x = 3
__________________
7x + 21 =4x
_____
2
7x + 21 = 8x
21 = x
espero haberte ayudado ^^!