What is the answer to - 0.3x 2=0.4x-0.1

That blank is a plus sign

ok so rememmber you can do anythiing to an equation as long as you do it to both sides

-0.3x+2=0.4x-0.1

add 0.3x to both sides

2=0.7x-0.1

add 0.1 to both sides

2.1=0.7x

times 7 both sides

21=7x

divide both sides by 7

3=x