Respuesta:
1 a) 60
1 b) 130
1 c) 57
2) x+4=12--- x=8
x+5=11 --- x=6
y+3=15--- y=12
y-3=15 --- y=18
7=y+5 ---- y=2
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Verified answer
Respuesta:
1 a) 60
1 b) 130
1 c) 57
2) x+4=12--- x=8
x+5=11 --- x=6
y+3=15--- y=12
y-3=15 --- y=18
7=y+5 ---- y=2