Odpowiedź:
a) x+x-5+2x=67
4x-5=67 /+5
4x =72 /:4
x=18
b)3x=x-3+x-3+x-3+x-3
3x=4x-12 /+12
3x+12=4x /-3x
x=12
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Odpowiedź:
a) x+x-5+2x=67
4x-5=67 /+5
4x =72 /:4
x=18
b)3x=x-3+x-3+x-3+x-3
3x=4x-12 /+12
3x+12=4x /-3x
x=12