Odpowiedź:
A)
97=2x-5
97+5=2x
102=2x
102:2=x
X=51
B)
43=7+9x
43-7=9x
36=9x
36:9=x
X=4
C)
17=11-12x
17-11=-12x
6=-12x
6:(-12)=x
X= - 0,5
D)
3=x/2-1
3+1=x/2
4=x/2
4*2=x
X=8
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Odpowiedź:
A)
97=2x-5
97+5=2x
102=2x
102:2=x
X=51
B)
43=7+9x
43-7=9x
36=9x
36:9=x
X=4
C)
17=11-12x
17-11=-12x
6=-12x
6:(-12)=x
X= - 0,5
D)
3=x/2-1
3+1=x/2
4=x/2
4*2=x
X=8