Starting with 3(2.5−2x)=13.5−14x, multiply out the left side:
7.5 - 6x = 13.5 - 14x
Next, combine like terms:
8x = 6 => x = 3/4
Check this result by substitution:
After subbing 3/4 for x, is 3(2.5−2[3/4])=13.5−14[3/4] true?
Is 3(1) = 13.5 - 42/4 true? YES. So x = 3/4 is right.
