2/5×(x-1 3/5)-0.75=3 1/4

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вопрос

To solve for x, we first need to simplify the left side of the equation:

2/5 * (x - 8/5) - 0.75 = 13/4

Distribute 2/5 to (x - 8/5):

2/5 x - 2/5 8/5 - 0.75 = 13/
2/5 * x - 16/25 - 0.75 = 13/4

Combine like terms:

2/5 * x - 41/25 = 13/4

Add 41/25 to both sides:

2/5 x = 13/4 + 41/2
2/5 x = 325/100 + 82/100

2/5 * x = 407/100

To solve for x, multiply both sides by the reciprocal of 2/5, which is 5/2:

x = (5/2) * (407/100
x = 2035/20
x = 10.175

Therefore, x ≈ 10.175.