问题
计算题
(1)计算:4+(﹣2)2×2﹣(﹣36)÷4;
(2)化简:3(3a﹣2b)﹣2(a﹣3b).
答案
解:(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).
解:(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.