Respuesta:
a. 2x+4 x=25
2(25)+4
50+4
R/ 54
b. 2a+4a a=3
2(3)+4(3)
6+12
R/18
c. 2a+6b a=4 b=2
2 (4)+6 (2)
8+12
R/20
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Respuesta:
a. 2x+4 x=25
2(25)+4
50+4
R/ 54
b. 2a+4a a=3
2(3)+4(3)
6+12
R/18
c. 2a+6b a=4 b=2
2 (4)+6 (2)
8+12
R/20