Get expert advice and community support for all your questions on IDNLearn.com. Get accurate and detailed answers to your questions from our dedicated community members who are always ready to help.

Find the value of [tex]$x$[/tex] in each of the following:

a) [tex]\(\frac{5x}{2} + 1 = 11\)[/tex]

b) [tex]\(\frac{2x}{7} - 3 = 2\)[/tex]


Sagot :

Certainly! Let's solve for [tex]\( x \)[/tex] in each of the given equations step-by-step:

### Part (a):
The equation given is:
[tex]\[ \frac{5x}{2} + 1 = 11 \][/tex]

Step 1: Subtract 1 from both sides of the equation to isolate the term involving [tex]\( x \)[/tex].
[tex]\[ \frac{5x}{2} + 1 - 1 = 11 - 1 \][/tex]
[tex]\[ \frac{5x}{2} = 10 \][/tex]

Step 2: Multiply both sides of the equation by 2 to eliminate the fraction.
[tex]\[ 2 \cdot \frac{5x}{2} = 2 \cdot 10 \][/tex]
[tex]\[ 5x = 20 \][/tex]

Step 3: Divide both sides of the equation by 5 to solve for [tex]\( x \)[/tex].
[tex]\[ x = \frac{20}{5} \][/tex]
[tex]\[ x = 4 \][/tex]

So, the value of [tex]\( x \)[/tex] in part (a) is [tex]\( x = 4 \)[/tex].

### Part (b):
The equation given is:
[tex]\[ \frac{2x}{7} - 3 = 2 \][/tex]

Step 1: Add 3 to both sides of the equation to isolate the term involving [tex]\( x \)[/tex].
[tex]\[ \frac{2x}{7} - 3 + 3 = 2 + 3 \][/tex]
[tex]\[ \frac{2x}{7} = 5 \][/tex]

Step 2: Multiply both sides of the equation by 7 to eliminate the fraction.
[tex]\[ 7 \cdot \frac{2x}{7} = 7 \cdot 5 \][/tex]
[tex]\[ 2x = 35 \][/tex]

Step 3: Divide both sides of the equation by 2 to solve for [tex]\( x \)[/tex].
[tex]\[ x = \frac{35}{2} \][/tex]
[tex]\[ x = 17.5 \][/tex]

So, the value of [tex]\( x \)[/tex] in part (b) is [tex]\( x = 17.5 \)[/tex].

### Summary:
- In equation (a), [tex]\( x = 4 \)[/tex].
- In equation (b), [tex]\( x = 17.5 \)[/tex].