第3个回答 2022-02-17
解:解方程, 此方程的解为x = 13/5,【即x = 2.6】
1.4 x 8 一 2x = 6
(1×10+4)/10 × 8 - 2x = 6
14/10 × 8 - 2x = 6
7/5 × 8 - 2x = 6
56/5 - 2x = 6
2x = 56/5 - 6
2x = 56/5 - 30/5
2x = 26/5
x = 26/5 ÷ 2
x = 26/5 × 1/2
x = 13/5
∴x = 2.6
经检验,1.4 × 8 - 2 × 2.6 = 6符合题意
答:此方程的解为x = 13/5,【即x = 2.6】