Question

−2 ∙ {27 ÷ [−3 ∙ (6 − 9)] + 4 ∙ [(10 − 6) + (−14 + 16)] − 1 ∙ [(5 − 15) ÷ (−4 + 2)]}
−2 ∙ {27 ÷ [−3 ∙ (−3)] + 4 ∙ [(−4) + (+2)] − 1 ∙ [(−10) ÷ (−2)]}

−2 ∙ {27 ÷ [+9] + 4 ∙ [−2] − 1 ∙ [+5]}
−2 ∙ {+3 − 8 − 5}
−2 ∙ {+3 − 13}
−2 ∙ {−10}

Answer 1

$-2\cdot \:27\div \:\left[-3\left(6-9\right)\right]+4\left[\left(10-6\right)+\left(-14+16\right)\right]-1\cdot \:\left[\left(5-15\right)\div \left(-4+2\right)\right]\\-2\cdot \:27\div \:9+4\left[\left(10-6\right)+\left(-14+16\right)\right]-1\cdot \:\left[\left(5-15\right)\div \left(-4+2\right)\right]\\-2\cdot \:27\div \:9+4\cdot \:6-1\cdot \:\left[\left(5-15\right)\div \left(-4+2\right)\right]\\-2\cdot \:27\div \:9+4\cdot \:6-1\cdot \:5\\-6+4\cdot \:6-1\cdot \:5\\-6+24-1\cdot \:5\\-6+24-5\\13$

$-2\cdot \:27\div \:\left[-3\left(-3\right)\right]+4\left[\left(-4\right)+\left(2\right)\right]-1\cdot \:\left[\left(-10\right)\div \left(-2\right)\right]\\-2\cdot \:27\div \:9+4\left[\left(-4\right)+\left(2\right)\right]-1\cdot \:\left[\left(-10\right)\div \left(-2\right)\right]\\-2\cdot \:27\div \:9+4\left(-2\right)-1\cdot \:\left[\left(-10\right)\div \left(-2\right)\right]\\-2\cdot \:27\div \:9+4\left(-2\right)-1\cdot \:5\\-6+4\left(-2\right)-1\cdot \:5\\-6-8-1\cdot \:5\\-6-8-5\\-19$

$-2\cdot \:27\div \:\left[9\right]+4\left[-2\right]-1\cdot \:\left[5\right]\\\frac{-54}{\left[9\right]}+4\left[-2\right]-1\cdot \:\left[5\right]\\\frac{-54}{\left[9\right]}-8-5\\\frac{-54}{\left[9\right]}-8-5\\-19$

$-2.+3-8-5\\3-8-5\\-10$

$-2\:\cdot +3\:-\:13\\-2+3-13\\-10$

$-2\:\cdot \:-10\\-2\left(-10\right)\\2\cdot \:10\\20$