Question

2.1+0.6×(2x+1)=X+10

Answer 1

方程的解是x=36.5或者写x=73/2

2.1+0.6✖️（2x+1）=x+10

2.1+1.2x+0.6=x+10

2.1x-x+2.7=x+10-x

0.2x+2.7-2.7=10-2.7

0.2x=7.3

0.2x➗0.2=7.3➗0.2

x=36.5或者写分数x=73/2

等号对齐书写即可

所以方程的解是x=36.5（x=73/2

Answer 2

2.1+0.6×(2x+1)=x+10
2.1+1.2x+0.6=x+10
1.2x-x=10-2.1-0.6
0.2x=7.3
x=36.5

Answer 3

2.1+0.6*（2x+1）=x+10
2.1+1.2x+0.6=x+10
1.2x-x=10-2.1-0.6
0.2x=7.3
x=7.3*5
x=36.5

Answer 4

2.1+0.6*（2x+1）=x+10解：2.1+1.2x+0.6=x+101.2x-x=10-2.1-0.60.2x=7.9-0.60.2x=7.3x=7.3/0.2x=36.5

Answer 5

解：解方程, 此方程的解为x = 73/2，【即x = 36.5】
2.1 + 0.6 × (2x + 1) = X + 10
（2×10+1）/10 + 6/10 × 2x + 6/10 = x + 10
21/10 + 3/5 × 2x + 3/5 = x + 10
21/10 + （6/5 ）x + 3/5 = x + 10
21/10 + （6/5）x + 6/10 = x + 10
27/10 + （6/5）x = x + 10
（6/5）x - x = 10 - 27/10
（6/5）x - （5/5）x = 100/10 - 27/10
（1/5）x = 73/10
x = 73/10 ÷ 1/5
x = 73/10 × 5
x = 73/2
∴x = 36.5
答：此方程的解为x = 73/2，【即x = 36.5】