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What is the solution to [tex]-\frac{3}{5}x + 4 \ \textgreater \ 1[/tex]?

A. [tex]x \ \textgreater \ -5[/tex]
B. [tex]x \ \textless \ -5[/tex]
C. [tex]x \ \textgreater \ 5[/tex]
D. [tex]x \ \textless \ 5[/tex]

Sagot :

Let's solve the inequality [tex]\(-\frac{3}{5}x + 4 > 1\)[/tex] step-by-step.

1. Isolate the x-term:

First, subtract 4 from both sides of the inequality to start isolating the term containing [tex]\(x\)[/tex]:
[tex]\[ -\frac{3}{5}x + 4 - 4 > 1 - 4 \][/tex]
Simplifying this expression, we get:
[tex]\[ -\frac{3}{5}x > -3 \][/tex]

2. Eliminate the coefficient of x:

To eliminate the coefficient, we can multiply both sides of the inequality by the reciprocal of [tex]\(-\frac{3}{5}\)[/tex], which is [tex]\(-\frac{5}{3}\)[/tex]. However, when multiplying by a negative number, we must reverse the inequality sign:
[tex]\[ x < -3 \times -\frac{5}{3} \][/tex]

3. Simplify the multiplication:

Calculate [tex]\(-3 \times -\frac{5}{3}\)[/tex]:
[tex]\[ -3 \times -\frac{5}{3} = 5 \][/tex]
Therefore, our inequality becomes:
[tex]\[ x < 5 \][/tex]

So the solution to the inequality [tex]\(-\frac{3}{5}x + 4 > 1\)[/tex] is:
[tex]\[ x < 5 \][/tex]

Examining the provided choices:
A) [tex]\(x > -5\)[/tex]
B) [tex]\(x < -5\)[/tex]
C) [tex]\(x > 5\)[/tex]
D) [tex]\(x < 5\)[/tex]

The correct answer is:
D) [tex]\(x < 5\)[/tex]