Solve by substitution 1. 4x-2y=14
y=1/2x-1
if u can please show your work:)
2. 2x=y-10
2x+7=2y
3. 8x-1/3y=0
12x+3=y

4x - 2y = 14
y = 1/2x - 1

4x - 2(1/2x - 1) = 14
4x - x +2 = 14
3x + 2 - 2 = 14 - 2
3x = 12
3x / 3 = 12/3
x = 4

2x = y -10
2x + 7 = 2y

y - 10 + 7 = 2y
y -y -10 + 7 = 2y - y
-3 = y

8x - 1/3 y = 0
12x + 3 = y

8x - 1/3y = 0
8x -1/3( 12x + 3) = 0
8x - 4x - 3 = 0
4x -3 + 3 = 0 + 3
4x / 4 = 3/4
x = 3/4

1 - Convert the percentage to a decimal.
2 - Multiply the decimal by the number you are finding the percentage of. This will be your final answer.

(1) 20% of 80
20 / 100 = 0.20
20% = 0.20
0.20 * 80 = 16
16 is 20% of 80

(2) 55% of 1000
55 / 100 = 0.55
55% = 0.55
0.55 * 1000 = 550
550 is 55% of 1000