5.43x 10^5 +8,410,000
In scientific notation

Which linear equations have an infinite number of solutions? check all that apply.  (x  –  3/7)  =  2/7(3/2x  –  9/14)8(x  +  2)  =  5x  –  1412.3x  –  18  =  3(–6  +  4.1x)(6x  +  10)  =  7(x  –  2)4.2x  –  3.5  =  2.1 (5x  +  8)

What is the solution of the systems of equations? y=2/3x+3 x=-2

Ben is three times as old as samantha, who is two years older than half of michel's age. if michel is 12. how old is ben?