-15(15+y) - 12(12y+1) + 10 = 16(3y-16) - 17(y+17)
-225 - 15y - 144y - 12 + 10 = 48y - 256 - 17y - 289
-225 - 159y - 2 = 31y - 545
-228 - 159y = 31y - 545
-228 + 545 = 31y + 159y
317 = 190y
y = 317/190
y ≈ 1.67368421053
Проверка:
-15(15+y) - 12(12y+1) + 10 = -15(15+1.67368421053) - 12(12*1.67368421053+1) + 10 = -15(16.67368421053) - 12(25.04421052636) + 10 ≈ -250.105263158 - 300.530526315 + 10 ≈ -500.635789473
16(3y-16) - 17(y+17) = 16(3*1.67368421053 - 16) - 17(1.67368421053+17) = 16(5.02105263159 - 16) - 17(18.67368421053) ≈ 16(-10.97894736) - 17(-50063578947) = -175.66315788 - (-311.50631579) ≈ -175.66315788 + 311.50631579 ≈ 135.84315789
Ответ верный.
-15(15+y) - 12(12y+1) + 10 = 16(3y-16) - 17(y+17)
-225 - 15y - 144y - 12 + 10 = 48y - 256 - 17y - 289
-225 - 159y - 2 = 31y - 545
-228 - 159y = 31y - 545
-228 + 545 = 31y + 159y
317 = 190y
y = 317/190
y ≈ 1.67368421053
Проверка:
-15(15+y) - 12(12y+1) + 10 = -15(15+1.67368421053) - 12(12*1.67368421053+1) + 10 = -15(16.67368421053) - 12(25.04421052636) + 10 ≈ -250.105263158 - 300.530526315 + 10 ≈ -500.635789473
16(3y-16) - 17(y+17) = 16(3*1.67368421053 - 16) - 17(1.67368421053+17) = 16(5.02105263159 - 16) - 17(18.67368421053) ≈ 16(-10.97894736) - 17(-50063578947) = -175.66315788 - (-311.50631579) ≈ -175.66315788 + 311.50631579 ≈ 135.84315789
Ответ верный.