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Afla X din expresia:48×3-X+(9:3+15)=129

Răspuns :

48×3-x+(9:3+15)=129
144-x+3+15=129
162-x=129
x=162-129
x=33

[tex]\it 48 \cdot 3-x+(9:3+15)=129 \Rightarrow 144-x + 18=129 \Rightarrow \\\;\\ \Rightarrow 162-x = 129 \Rightarrow x = 162-129 \Rightarrow x = 33[/tex]