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X - 1/2 = 3/4 what is the answer I don’t have a clue

User Follmer
by
7.7k points

2 Answers

2 votes

Answer:


{ \boxed{ \: x = (5)/(4) \: }}

Explanation:


x - (1)/(2) = (3)/(4) \\

• To make x the subject, let's add ½ on both sides;


(x - (1)/(2) ) + (1)/(2) = ( (3)/(4) ) + (1)/(2) \\ \\ x = (3)/(4) + (1)/(2)

• To solve the operation above, the LCM of 4 and 2 is 4. From the formula below;


{ \boxed{ \tt{ \red{( x )/(a) + (y)/(b) = \frac{ \{(lcm / a) * x \} + \{(lcm / b) * y \}}{lcm = (ab)} }}}}

Therefore;


x = \frac{ \{(4 / 4) * 3 \}+ \{(4 / 2) * 1 \} }{4} \\ \\ x = (3 + 2)/(4) \\ \\ x = (5)/(4)

User Chris Edwards
by
8.4k points
4 votes

Answer:


\sf x = (5)/(4)

Explanation:


\sf x - (1)/(2) = (3)/(4)

To isolate the variable
\sf x, we can add
\sf (1)/(2) to both sides of the equation:


\sf x - (1)/(2) + (1)/(2) = (3)/(4) + (1)/(2)

On the left side, the
\sf (1)/(2) terms cancel out, leaving:


\sf x = (3)/(4) + (1)/(2)

Now, find a common denominator to add the fractions on the right side. The common denominator for 4 and 2 is 4. So, rewrite
\sf (1)/(2) with the denominator 4:


\sf x = (3)/(4) + (2)/(4)

Now, add the numerators:


\sf x = (3+2)/(4)


\sf x = (5)/(4)

So, the solution to the equation
\sf x - (1)/(2) = (3)/(4) is
\sf x = (5)/(4).

User Offroff
by
7.3k points