问题
解答题
(1)计算:4+(-2)2×2-(-36)÷4;
(2)化简:3(3a-2b)-2(a-3b).
答案
(1)原式=4+4×2-(-9)
=4+8+9
=17;
(2)原式=9a-6b-2a+6b
=(9-2)a+(-6+6)b
=7a.
(1)计算:4+(-2)2×2-(-36)÷4;
(2)化简:3(3a-2b)-2(a-3b).
(1)原式=4+4×2-(-9)
=4+8+9
=17;
(2)原式=9a-6b-2a+6b
=(9-2)a+(-6+6)b
=7a.