解方程(写过程) ①2/9×(x+1)=6 ②x÷13/4=1.2 ③16.9×(3-2x)=0

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解方程(写过程) ①2/9×(x+1)=6 ②x÷13/4=1.2 ③16.9×(3-2x)=0

解方程(写过程) ①2/9×(x+1)=6 ②x÷13/4=1.2 ③16.9×(3-2x)=0
解方程(写过程) ①2/9×(x+1)=6 ②x÷13/4=1.2 ③16.9×(3-2x)=0

解方程(写过程) ①2/9×(x+1)=6 ②x÷13/4=1.2 ③16.9×(3-2x)=0
1.2/9×(x+1)=6
=> (x + 1) = 6 * 9/2 = 27
=> x = 27 -1 = 26
2.x = 1.2 * 4/13 = 4.8/13 = 48 / 130 = 24 / 65
3.
16.9×(3 - 2x)=0
=> 3(16.9)- 2(16.9)x = 0
=> 3(16.9) = 2(16.9)x
=> x = 3(16.9)/2(16.9) = 3/2

①26
②3.9
③1.5

1.2/9×(x+1)=6
=> (x + 1) = 6 * 9/2 = 27
=> x = 27 -1 = 26
2. x = 1.2 * 4/13 = 4.8/13 = 48 / 130 = 24 / 65
3.
16.9×(3 - 2x)=0
=> 3(16.9)- 2(16.9)x = 0
=> 3(16.9) = 2(16.9)x
=> x = 3(16.9)/2(16.9) = 3/2