Question

simplify minus 3 by 5 minus minus 4 by 15 minus 7 by minus 10​

Answer 1

Answer:

2/5-3/10-4/7

=(-28-21-40)/70

=-89/70

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Answer 2

Answer:

• $\frac{3}{5} - \frac{-4}{15} -\frac{7}{-10}$ (minus into minus = plus)
• $\frac{3}{5} +\frac{4}{15} +\frac{7}{10}$
• LCM OF 10,15 AND 5 = 30
• $\frac{3*6}{5*6} +\frac{4*2}{15*2} +\frac{7*3}{10*3}$
• $\frac{18+8+21}{30}$
• $\frac{47}{30}$
• 1 $\frac{17}{30}$