题目内容
(本小题每题6分,共12分)解方程:(1) 3x +5 = 4x + 1 (2) -1=
(1) x=4(2) y="-1 "
解析
(本小题每题6分,共12分)
计算:
(1) -8+4÷(-2) (2) (+-)×12+(-2)3
解方程:
(1) 3x +5 = 4x + 1 (2) -1=