(1)1.3x+1.5x=0.14 (2)1.56x+3.16=7.84 (3)(x-3)⼀4=7.2 (4)0.7*3-0.3x=0.06 (5)35-2.5x=5

2025-12-18 05:55:08
推荐回答(2个)
回答1:

(1)1.3x+1.5x=0.14
2.8x=0.14
x=0.5
(2)1.56x+3.16=7.84
1.56x=4.68
x=3
(3)(x-3)/4=7.2
x-3=28.8
x=31.8
(4)0.7*3-0.3x=0.06
0.3x=2.04
x=6.8
(5)35-2.5x=5
2.5x=30
x=12
(选为最佳答案!)

回答2:

(1)1.3x+1.5x=0.14
解:2.8x=0.14
x=0.05

(2)1.56x+3.16=7.84
解:1.56x=4.68
x=3

(3)(x-3)/4=7.2
解:x-3=28.8
x=31.8

(4)0.7*3-0.3x=0.06
解:0.3x=2.04
x=6.8

(5)35-2.5x=5
解:2.5x=7
x=2.8