First, distribute the factor of 4 over the terms in parentheses.
20+4⋅3x+4⋅(−5)+2x=2820+12x−20+2x=28
Next, combine like terms.
20−20+12x+2x=2814x=28
By the division property of equality, divide both sides of the equation by 14 to solve for the value of x.
14x14=2814x=2 (i got it from the test)