a
2x=12
x=6
b
2x=13
x=6.5
c
2x+10=x-4
x=-14
Odpowiedź:
a) 2x+5=17
2x=17-5
2x=12|÷2
b) 3x-4=x+9
3x= x+9+4
3x-x= 13
2x=13|÷2
x=6,5
c) 2(x+5)= x-4
2x-x=-14
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a
2x=12
x=6
b
2x=13
x=6.5
c
2x+10=x-4
x=-14
Odpowiedź:
a) 2x+5=17
2x=17-5
2x=12|÷2
x=6
b) 3x-4=x+9
3x= x+9+4
3x-x= 13
2x=13|÷2
x=6,5
c) 2(x+5)= x-4
2x+10=x-4
2x-x=-14
x=-14