1.solve for d under 1 can't type that means it wants d1= so A= 1/2 d1d2 Mult by 2/1 of each side you get 2A= 1/2times 2/1 d1d2 2A= d1d2 Divide by d2 on both sides the d2 cancel on the right 2A/d2= d1 d1= 2A/d2
2.V=LWH Divide by LH V/LH= LWH/LH. LH cancel V/LH= W Hope this helps You and mom 7. -4x+y=9 Bring the 4x to the right makes it positive Y= 4x+9
9. -3y+18x=12 -3y= -18x+12 Divide by -3 all of it Y= 6x-4