Question

7*15/3*15+23*9/5*9-7*5/9*5
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Answer 1

Answer:

71.4

Step-by-step explanation:

$7 \times \frac{15}{3} +23 \times\frac{9}{5} -\frac{5}{9} \times5\\=7 \times 5+\frac{207}{5} -\frac{25}{9} \\=\frac{35 \times 45+207 \times 9-25 \times 5}{45} \\=\frac{1575+1863-125}{45} \\=\frac{3213}{45}\\=71.4$