Question

8 * 40 -(x - 8)* 8 = (2 - x) * 5 + 8 * 40 помогите, срочно нужно

Answer 1

8 * 40 -(x - 8)* 8 = (2 - x) * 5 + 8 * 40
320 - (8х - 64) = 10 - 5х + 320
320 - 8х + 64 - 10 + 5х - 320 = 0
-3х + 54 = 0
-3х = -54
-х = -54:3
х = 18