Răspuns:
Explicație pas cu pas:
a) x=14cm8mm-8cm 9mm=13cm 18mm-8cm9mm=5cm9mm
b)x=6cm7mm+14cm8cm=20cm15mm=21cm5mm
c)12cm 5mm=2x/3+x 3×12cm 5mm=5x 36 cm 15mm=5x
35cm 25mm=5x x=7cm 5 mm
d)x-x/3=11cm 2mm 2x/3=11cm 2mm 2x=33cm6mm
2x=32cm 16mm x=16cm 8mm
