Plz me on this and also answer them into spanish plz it’s due tommorow 25 points plz you very much. don’t answer in english you.

Question 12 of 252 pointssteps for solving 6x- 18 = 54 are shown.explain how step 1 solve the equation.6x -18 = 546x -18 +18 = 54 +186x = 72original equationstep 1step 2step 36x 7266x = 12step 4.oa. adding 18 to both sides isolates the variable.des sb. subtracting 18 from both sides undoes the subtraction.oc. adding 18 to both sides isolates the variable term.od. subtracting 18 from both sides combines like terms.

Achemist mixes 4 liters of one acid solution with 10 liters of a 40% solution, resulting in a 30% acid solution. what is the value of x, the acid concentration of the first solution

Después de reclamar mis maletas, las a la aduana.