20 points if answered correctly and brainliest me (07.06 lc)

which statement is true about the equation 3.5z = 2.25z − 4.25 + 6.25?
it has no solution.
it has one solution.
it has two solutions.
it has infinitely many solutions.

Helll ! 1,400 tons of wheat of two different varieties was delivered to the silo. when processing one variety, there was 2% of waste and 3% during the processing of the second variety of wheat. after the processing, the amount of remaining wheat was 1,364 tons. how many tons of each variety of wheat was delivered to the silo?