<span>6x-3y=27 --> 3*(2x-y = 9)
3x-y=13 Doesn't factor</span>
You multiply each side by 5/2 because it's the reciprocal of 2/5 so 3 times 5/2 = 7.5 so y=7.5
830×20=16,600 because using place value we know anything ×2 you multiple that and add the zeros
Answer:
The second one is 0.1x-16
Perimeter is 30
Area is also 30.
Add the numbers to get the perimeter and then use 1/2bh to get the area. <span />