问题描述:
解方程并验算
(1)3x-0.5x=2.8 验算:
(2)5.64x+3.2x=21 验算:
(3)0.27×3-6x=51% 验算:
(4)7x=3/25+2x 验算:
(1)3x-0.5x=2.8 验算:
(2)5.64x+3.2x=21 验算:
(3)0.27×3-6x=51% 验算:
(4)7x=3/25+2x 验算:
问题解答:
我来补答展开全文阅读