Question

64.4+1.8×(36.8-x)=86.9

Answer 1

1,8 * (36,8 - х) = 22,5 - перенесли 64,4 на правую сторону
36,8 - х = 12,5 - правую и левую сторону разделили на 1,8
х = 24,3 - нашли х

Answer 2

To solve the equation 64.4 + 1.8 × (36.8 - x) = 86.9, follow these steps:

Step 1: Distribute the multiplication 1.8 × (36.8 - x) = 1.8 × 36.8 - 1.8 × x = 66.24 - 1.8x

Step 2: Rewrite the equation with the distributed term 64.4 + 66.24 - 1.8x = 86.9

Step 3: Combine like terms (64.4 + 66.24) - 1.8x = 86.9 130.64 - 1.8x = 86.9

Step 4: Move the constant term to the right side of the equation by subtracting it from both sides 130.64 - 86.9 = 86.9 - 86.9 - 1.8x 43.74 = -1.8x

Step 5: Isolate the variable x by dividing both sides by -1.8 (to simplify, you can divide by -1.8 first) x = 43.74 / -1.8 x = -24.3

So, the solution to the equation is x = -24.3.