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[(11+x:5):7+8]:2-1 vă rog am incercat dar mi-a dat cu rest​

Răspuns :

Deea4693ask

[(11+x÷5)÷7+8]÷2-1

=[(11+1/5x)÷7+8]÷2-1

=[(11+1/5x)÷1/7+8]2-1

=(55+x/5×1/7+8)×2-1

=(55+x/35+8)×2-1

=55+x+280/35×2-1

=335+x/35×2-1

=2(335+x)/35-1

=670+2x/35-1

=670+2x-35/35

=635+2x/35

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