The solution equation is: 4 (X-13) = 23 + X (6.3-3.8 △ 2 + 2.7) × 3 = 9.912.6-2.2x = 3.1x-4.36 4(x-13)=23+x (6.3-3.8÷2+2.7)×3=9.9 12.6-2.2x=3.1x-4.36 What's the formula

The solution equation is: 4 (X-13) = 23 + X (6.3-3.8 △ 2 + 2.7) × 3 = 9.912.6-2.2x = 3.1x-4.36 4(x-13)=23+x (6.3-3.8÷2+2.7)×3=9.9 12.6-2.2x=3.1x-4.36 What's the formula

4(x-13)=23+x
x=25