Ответ:
x = -8,5
y = -4 1/20
Пошаговое объяснение:
3. (-6 2/3) = -20/3
(-1 1/5) = -6/5
(-20/3) × (-6/5) + x = -0,5
(20×6)/(3×5) + x = -0,5
(4×5×2×3)/(3×5) + x = -0,5
(4×2) + x = -0,5
8 + x = -0,5
x = -0,5 - 8
4. 3 3/4 = 15/4
(-5/14) × 21/25 - y = 15/4
-(5×21)/(14×25) - y = 15/4
-(5×3×7)/(2×7×5×5) - y = 15/4
-3/10 - y = 15/4
-y = 15/4 + 3/10
y = -15/4 - 3/10
y = -75/20 - 6/20
y = (-75-6)/20
y = -81/20
y = - 4 1/20
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Answers & Comments
Ответ:
x = -8,5
y = -4 1/20
Пошаговое объяснение:
3. (-6 2/3) = -20/3
(-1 1/5) = -6/5
(-20/3) × (-6/5) + x = -0,5
(20×6)/(3×5) + x = -0,5
(4×5×2×3)/(3×5) + x = -0,5
(4×2) + x = -0,5
8 + x = -0,5
x = -0,5 - 8
x = -8,5
4. 3 3/4 = 15/4
(-5/14) × 21/25 - y = 15/4
-(5×21)/(14×25) - y = 15/4
-(5×3×7)/(2×7×5×5) - y = 15/4
-3/10 - y = 15/4
-y = 15/4 + 3/10
y = -15/4 - 3/10
y = -75/20 - 6/20
y = (-75-6)/20
y = -81/20
y = - 4 1/20