Can somebody please help with these two? I'll mark brainliest for your answer!1: How do you find 3 4/5x - 2 1/2 for x = -10 step by step?2: Simplify the expression step by step, listing the property of operations used. -5/6 X (-5/8) X 6/5 =Thank you so much!
Accepted Solution
A:
Answer:1. [tex]-40\dfrac{1}{2}[/tex]2. [tex]\frac{5}{8}[/tex]Step-by-step explanation:1. We are given an expression that is [tex]3\dfrac{4}{5}x-2\dfrac{1}{2}[/tex]. We have to find its value for x = - 10So, [tex]3\dfrac{4}{5}x-2\dfrac{1}{2}[/tex]= [tex]\frac{19x}{5} -\frac{5}{2}[/tex]= [tex]\frac{19}{5} \times(-10) -\frac{5}{2}[/tex] {Putting the value of x}= [tex]-38 - \frac{5}{2}[/tex]= [tex]-\frac{81}{2}[/tex]= [tex]-40\dfrac{1}{2}[/tex] (Answer)2. [tex](-\frac{5}{6}) \times (-\frac{5}{8} )\times (\frac{6}{5} )[/tex]= [tex]\frac{5}{6} \times \frac{5}{8} \times \frac{6}{5}[/tex]= [tex]\frac{5}{8}[/tex] (Answer){Since [tex]\frac{a}{b} \times \frac{b}{c} =\frac{a}{c}[/tex]}