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[+5 +8] × (-2) - [-7 +12 +2 ]
[ +13 ] × (-2 ) -7
-26 -7 = - 33
2) 25:[2+(-7)]-12x[(-3)-2x(-4)+(-6)]
25÷[-5] -12 ×[(-3)+8+(-6)]
[-5] -12 × [5 -6 ]
[-5] -12 × [ -1 ]
-5 +12 = 7