3. Múltiple of 4
I don’t know if 5 is supposed to be 35/42 but if it’s 36/42 I don’t know
1) 8x-13
2)19r-19s
3)8m-10n
Solve in the parentheses then label the ones with the same variable and solve those setting up the equation with variable first. Do check this I am not perfect.
Hope this helped! ;)
Try solving for the variable and get everything to one side