Respostas

2014-01-29T20:25:02-02:00
4x+1=6x-21
4x-6x=-21-1
-2x=-22      (-1)
2x=22
x=22/2
x=11

Ângulos:

4.11+1 = 45.

45+45+x+x=360
90+2x=360
2x=360-90
2x=270
x=270/2
x=135

Logo as medidas dos ângulos serão 45 graus, 45 graus e 135 graus, 135 graus.
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