Question

75- ( 3 x 5² - 4 x 2³)

A= 12:{390:[ 500-(125+35x7)]}

Answer 1

\(75-\left(3\times5^2-4\times2^3\right)\)
\(=75-\left(3\times25-4\times8\right)\)
\(=75-\left(75-32\right)\)
\(=75-43\)
\(=32\)
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\(A=12:\left\{390:\left[500-\left(125+35\times7\right)\right]\right\}\)
\(A=12:\left\{390:\left[500-120\right]\right\}\)
\(A=12:\left\{390:380\right\}\)
\(A=12:\dfrac{39}{38}\)
\(A=\dfrac{152}{13}\)