-1²-(-2)³÷(5-7)
-1²-(-2)³÷(5-7)
-4³÷﹙﹣2﹚²×1/5
-1^2013+(-5)^2÷|-5/6|*2/5-4²÷(-2)³
(1)-18÷(-3)²+5×(-1/2)³-(-15)÷5
(1).4分之7÷8分之7-3分之2×(-6) (2).4-5×(-2分之1)³ (3).-2²×7
(-2×5)³-(-1又7/9)×(-3/4)²-(-1/0.1)²÷(-0.1)
(1)1-7+3x/8=3x-10/4-x (2)-3³-[-5-0.2÷4/5×(-2)²]
-2²÷4/9+|-7|-3×(-1/3),(1)(-1)2013×3+4÷(-2)³
计算 [5/1/3÷(-2)³+(0.4)²×(-x-1 /4)]×(0.6)
-2³÷4/9×(-2/3)²+(-0.8)-5×(-1/4)
(1)(a³)²÷(a²)³(2)(ab²)³÷(-ab)&
①(3x²y³)²÷(1/3xy²)²-7xy²