求解方程:9.7x-3(2.1x+3)=5.34-2.1*(7.4-2x)谢谢

2025-06-28 09:02:29
推荐回答(2个)
回答1:

9.7x-3(2.1x+3)=5.34-2.1*(7.4-2x)
解:9.7x-6.3x-9=5.34-15.54+4.2x
3.4x-9=4.2x-10.2
4.2x-3.4x=10.2-9
0.8x=1.2
x=1.5

回答2:

9.7x-3(2.1x+3)=5.34-2.1(7.4-2x),
9.7x-6.3x-9=5.34-15.54+4.2x,
4.2x+6.3x-9.7x=15.54-9-5.34,
0.8x=1.2,
x=1.5