Answer:
The value of variable r in the equation [tex]10r+4=8[/tex] is [tex]\mathbf{r=0.4}[/tex]
Step-by-step explanation:
We need to find the value of variable r in the equation [tex]10r+4=8[/tex]
Step 1: Write the equation
[tex]10r+4=8[/tex]
Step 2: Subtract 4 on both sides
[tex]10r+4-4=8-4\\10r=4[/tex]
Step 3: Divide both sides by 4
[tex]\frac{10r}{10}=\frac{4}{10}\\r=0.4[/tex]
So, The value of variable r in the equation [tex]10r+4=8[/tex] is [tex]\mathbf{r=0.4}[/tex]
