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2*3x+2*(x+7)+2x+1=110
6x+2x+14+2x+1=110
10x=110-15
x=9.5m
figura b
4*2a=144
a=144/8
a=18m
figura c
2*z+2*3z=76
8z=76
z=9.5cm
figura d
2*3x+4x=76
10x=76
x=7.6m