Question

2+3×{5+10×[1+10×(16÷4-2×2)-5}-2

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Answer 1

2+3×{5+10×[1+10×(16÷4-2×2)-5}-2

$1+10\times \left(16\div \:4-2\times \:2\right)-5$

$16\div \:4-2\times \:2$ = $16\div \:4$ = $4$

$=4-2\times \:2$

$2\times \:2$ = $4$

$=4-4 = 0$

$=1+10\times \:0-5$

$=1+10\times \:0-5$ = $=-4$

$=2+3\times \:5+10\times \left(-4\right)-2$

$=2+3\times \:5+10\times \left(-4\right)-2$

$=2+15+10\times \left(-4\right)-2$

$=2+15-40-2$

$2+15-40-2$

$=17-40-2$

$=-23-2$

$=-25$

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