✒️[tex]\large{\mathcal{ANSWER}}[/tex]
[tex]======================[/tex]
- The correct alternative, which corresponds to the solution of this equation, is the letter B. That is, the value of 'x", is: two (2).
• With the indicated equation:
[tex] \: \boxed{2x +5 + x + 7 = 18}[/tex]
» An equation of the first degree, composed of two sides: right side and left side. Right side is the first member, the left side is the second member.
» So with this information, we will add the equal terms to the right side of the equality. Next, we'll move the positive number indicated in this equation to the left side of the equality by subtracting.
» Finally, let's isolate "x", and we will divide both sides of the equality between them, being: the left side to the right side.
[tex]2x + 5 + x + 7 = 18[/tex]
[tex]2x + x + 7 + 5 = 18[/tex]
[tex]3x + 7 + 5 = 18[/tex]
[tex]3x + 12 = 18[/tex]
[tex]3x = 18 - 12[/tex]
[tex]3x = 6[/tex]
[tex]x = \frac{6}{3} [/tex]
[tex] \: \boxed{x = 2} √[/tex]
[tex]−−−−−−−✠−−−−−−−[/tex]
