摘要:A.5 B.或5 C.25或7 D.16
网址:http://m.1010jiajiao.com/timu_id_662297[举报]
计算或解方程:
(1)14-(-12)+(-25)-17
(2)-14-
×[2-(-3)2]
(3)5a2-[3a-(2a-3)+4a2]
(4)3x-4(2x+5)=x+4
(5)
=
+1.
查看习题详情和答案>>
(1)14-(-12)+(-25)-17
(2)-14-
1 |
6 |
(3)5a2-[3a-(2a-3)+4a2]
(4)3x-4(2x+5)=x+4
(5)
x-1 |
4 |
2x+1 |
6 |