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Fantom [35]
3 years ago
13

Equivalent form of this equation x/12 -7=x/4

Mathematics
2 answers:
qwelly [4]3 years ago
6 0

Answer:

Option 3. x-84=3x

Step-by-step explanation:

we have

\frac{x}{12}-7=\frac{x}{4}

simplify

Multiply by 12 both sides

12(\frac{x}{12}-7)=12(\frac{x}{4})

x-7*12=3x\\ \\x-84=3x

3x-x=-84\\ 2x=-84\\ x=-42

therefore

the answer is the option 3

ASHA 777 [7]3 years ago
3 0
The correct answer is<span> 3. x-84=3x

That's because
</span>X/12 - 7 = x/4 is also (x-84)/7 = x/4 and when you cross multiply it you get (x-84)*4 = x * 7
4x-336=7x
-3x = 336
x = 336/-3
x = -112


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