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Sagot :
Answer:
Step-by-step explanation:
4/7 x + 70 cm^3 = 3/4 x Subtract 4/7 x from both sides
3/4 x - 4/7 x = 70 cm^3 The lowest common denominator is 28
[tex]\frac{3*7*x}{4*7} - \frac{4*4x}{4*7} = 70 cc\\\frac{21*x}{28} - \frac{16*x}{28} = 70 cc\\\frac{5x}{28}= 70cc\\[/tex]
5x = 70*28
5x = 1960 Divide by 5
x = 1960/5
x = 392 cc
Answer:
- 392 cm³
Step-by-step explanation:
The difference of 3/4 and 4/7 of the volume is 70 cm:
- 3/4 - 4/7 = 7/7*3/4 - 4/4*4/7 = 21/28 - 16/28 = 5/28
5/28 of the volume is 70 cm³
Divide both numbers by 5/28 to find the total volume of the glass:
- 70 : 5/28 = 70*28/5 = 392 cm³
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