Respuesta:
realiza las operaciones combinadas Recuerda, de jerarquía de solución
Explicación paso a paso:
[tex]8\cdot \left(75-50\right)+42\div 6-15\div \left(7-2\right)\\=8\cdot \:25+42\div \:6-15\div \left(7-2\right)\\=8\cdot \:25+42\div \:6-15\div \:5\\=200+42\div \:6-15\div \:5\\=200+7-15\div \:5\\=200+7-3\\=204[/tex]
[tex]120\div \left(30-18\right)+2\cdot 8-18\div \left(5-2\right)\\=120\div \:12+2\cdot \:8-18\div \left(5-2\right)\\=120\div \:12+2\cdot \:8-18\div \:3\\=10+2\cdot \:8-18\div \:3\\=10+16-18\div \:3\\=10+16-6\\=20[/tex]
[tex]18.6\div \left(1.4+0.6\right)+4.2\cdot 3-15.5\div \left(3.4+1.6\right)\\=\frac{18.6}{1.4+0.6}-\frac{15.5}{3.4+1.6}+3\cdot \:4.2\\=\frac{18.6}{2}-\frac{15.5}{1.6+3.4}+3\cdot \:4.2\\=\frac{18.6}{2}-\frac{15.5}{5}+3\cdot \:4.2\\=\frac{18.6}{2}-\frac{15.5}{5}+12.6\\=\frac{93}{10}-\frac{31}{10}\\=\frac{93-31}{10}\\=\frac{62}{10}\\=12.6+\frac{31}{5}\\=12.6+6.2\\=18.8[/tex]
[tex]10.5\cdot \left(7.5-2.5\right)+3.6\div \left(0.98+1.02\right)+14.4\div \left(9.7-7.7\right)\\=52.5+\frac{3.6}{2}+\frac{14.4}{2}\\=52.5+9\\=61.5[/tex]
te digo solo la (a) y (b)
8× 25 ± 7 - 15 ÷ 5 120÷ 12 ± 16 -18 ÷ 3
200 ± 7 - 3 10 ± 16 - 6
200 ± 4 10 ± 10
204 20
En eso te puedo ayudar espero que les sirva
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Verified answer
Respuesta:
realiza las operaciones combinadas Recuerda, de jerarquía de solución
Explicación paso a paso:
[tex]8\cdot \left(75-50\right)+42\div 6-15\div \left(7-2\right)\\=8\cdot \:25+42\div \:6-15\div \left(7-2\right)\\=8\cdot \:25+42\div \:6-15\div \:5\\=200+42\div \:6-15\div \:5\\=200+7-15\div \:5\\=200+7-3\\=204[/tex]
[tex]120\div \left(30-18\right)+2\cdot 8-18\div \left(5-2\right)\\=120\div \:12+2\cdot \:8-18\div \left(5-2\right)\\=120\div \:12+2\cdot \:8-18\div \:3\\=10+2\cdot \:8-18\div \:3\\=10+16-18\div \:3\\=10+16-6\\=20[/tex]
[tex]18.6\div \left(1.4+0.6\right)+4.2\cdot 3-15.5\div \left(3.4+1.6\right)\\=\frac{18.6}{1.4+0.6}-\frac{15.5}{3.4+1.6}+3\cdot \:4.2\\=\frac{18.6}{2}-\frac{15.5}{1.6+3.4}+3\cdot \:4.2\\=\frac{18.6}{2}-\frac{15.5}{5}+3\cdot \:4.2\\=\frac{18.6}{2}-\frac{15.5}{5}+12.6\\=\frac{93}{10}-\frac{31}{10}\\=\frac{93-31}{10}\\=\frac{62}{10}\\=12.6+\frac{31}{5}\\=12.6+6.2\\=18.8[/tex]
[tex]10.5\cdot \left(7.5-2.5\right)+3.6\div \left(0.98+1.02\right)+14.4\div \left(9.7-7.7\right)\\=52.5+\frac{3.6}{2}+\frac{14.4}{2}\\=52.5+9\\=61.5[/tex]
Respuesta:
te digo solo la (a) y (b)
Explicación paso a paso:
8×(75-50)±42÷6-15÷(7-2)= 120÷(30-18)±2×8-18÷(5-2)
8× 25 ± 7 - 15 ÷ 5 120÷ 12 ± 16 -18 ÷ 3
200 ± 7 - 3 10 ± 16 - 6
200 ± 4 10 ± 10
204 20
En eso te puedo ayudar espero que les sirva