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7×3+9×4-10:2 b)128×3+(128+3)-84:2 c)(712+1532)+2×(59+47) d)6302-(1250+1975)+39:3 e)(57×62+84÷2)×0 f)1×(66+3):3+28×19

Răspuns :

[tex]a)7\cdot \:3+9\cdot \:4-\frac{10}{2}=21+4\cdot \:9-\frac{10}{2}=21+36-5=52 \\ b)128\cdot \:3+\left(128+3\right)-\frac{84}{2}=384+128+3-42=473 \\ c)\left(712+1532\right)+2\times \left(59+47\right)=2244+2\times \left(59+47\right)=2244+212=2456[/tex]