Container a and b hold 11,875 liters of water altogether. Container b holds 2,391 liters more than container a holds. How much water does container a hold?
To find the answer we have to create system of equation and substitute b from second eq to the first. [tex] \left \{ {{a+b=11875} \atop {a+2391=b}} \right.
a+a+2391=11875[/tex] Now we have to solve eq 2a+2391=11875 /-2391 both sides 2a=9484 /:2 a=4742 Now we can back substitute to second eq and find value of b b=4742+2391 b=7133 Its the result [tex] \left \{ {{a=4742} \atop {b=7133}} \right. [/tex]