how?!?!?!?
12=(20-4x)/3
x=-4
please why is x -4?????
12=20−4x3$multbothsidesby3$36=20−4x$subtract20frombothsides$16=−4x$dividebothsidesby−4$x=−4
check answer
right hand side (RHS)
= (20-4*-4)/3
= (20--16)/3
=(20+16)/3
=36/3
=12
= LHS (Left hand side)
