49000000 -8373448588766

Serena is making an experiment. for that, she needs 20 grams of a 52% solution of salt. she has two large bottles of salt water: one with 40% and the other with 70% of salt in them. how much of each must she use to make the solution she needs? i am in need of

Solve for x: 5/3 x = 20/21 it's fraction. remember to simplify your fraction

Pls the last one and it has to be like number 6