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Juli2301 [7.4K]
4 years ago
5

How do you solve the proportion7/5=x/3 ??

Mathematics
2 answers:
mote1985 [20]4 years ago
5 0
The way I like to solve proportions is by cross multiplying and dividing. First yo multiply the diagonals and then you divide by the other number. So if your proportion is 7/5 = x/3, your equation would be 7*3/5.  So 7*3 is 21, so your equation is now 21/5.  With some long division, you'll see that 21/5 = 4.2  That's your answer, feel free to ask more questions if you need!!(:
WINSTONCH [101]4 years ago
3 0
7/5=x/3
so multiply them diagonally. 7*3=21 and 5*x=5x
5x=21
divide it by 5
so....
5x/5=21/5
x=4.2
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3 years ago
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poizon [28]
Ok, so here your being asked to solve 6x2<span> + 5x = -7 

The procedure that I did was using this formula it led me to get the following:
</span>Using the formula:

x = -(-5) ± √(-5)² - 4(6)(-6)/ 2(6)
x = 5 ± √ 25 + 144 / 12
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