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Answer 1 · 2018-01-22T06:31:02

$=-107$

Rewrite the expression as:

$7\times 3-4color(red)((\frac{8}{4}))^{2+color(red)(\frac{6}{2}})$

Simplify the fractions:

$\rightarrow 7\times 3-4color(red)((2))^{2+color(red)(3)}$

$\rightarrow 7\times 3-4color(blue)((2)^5)$

Evaluate the exponent:

$\rightarrow 7\times 3-4color(blue)((32))$

Evaluate the multiplication:

$\rightarrow 21-128$

$\rightarrow -107$