Ex 4,6 plsssssssssssss
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Răspuns:
Explicație pas cu pas:
4) <2 = <4 = <6 = <8 = 120
360 - 2*120 = 360 - 240 = 120 = <1 + <3
<1 = <3 = <5 = <7 = 120/2 = 60
6) <2 = <6
4x -20 = 180 - (x +30)
4x - 20 = 180 -x -30 = 150 -x
5x = 170, x = 34