1) X-8 = 80 Add 8 to both sides to isolate X: X = 80 + 8 X = 88
2) 2000 + a = 500 Subtract 2000 from both sides to isolate a: a = 500 - 2000 a = -1500
3) 1200 / (y - 600) = 400 Multiply both sides by (y - 600) to isolate y: 1200 = 400(y - 600) Divide by 400 on both sides: 3 = y - 600 Add 600 to both sides: y = 603
To solve these equations:
1) X-8 = 80
Add 8 to both sides to isolate X:
X = 80 + 8
X = 88
2) 2000 + a = 500
Subtract 2000 from both sides to isolate a:
a = 500 - 2000
a = -1500
3) 1200 / (y - 600) = 400
Multiply both sides by (y - 600) to isolate y:
1200 = 400(y - 600)
Divide by 400 on both sides:
3 = y - 600
Add 600 to both sides:
y = 603