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Q.

The value of h in given equation 3 + 4(7-h) - 4(3h-1) = 0 is:

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a

4.1875

b

2.1875

c

3.1875

d

8.1875

answer is B.

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Detailed Solution

Concept:A one-variable linear equation is a straight-line equation written in one variable. The variable's highest power is 1, which. Linear equations in a variable can take the form ax + b = 0 and can be solved using elementary algebraic operations.
What we have here is a conditional equation. A conditional comparison is true only for some variable values.[7]
The solution set consists of a number: {−4}.On a general note about the linear equation in one variable, we can say the following :A linear equation with one variable can be written in the form ax+b=0where a and b are real numbers, a≠0.We now have the equation 3 + 4(7-h) – 4(3h-1) = 0,If we open all the brackets, we get 3 + 28 - 4h - 12h + 4 = 0,
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Hence, the correct option is 2.

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