Name the property used in the following: 1. if m + n = p, then m + n + 3 = p+3
2. If a = 8, then a-3=5
3. If 2x = z, and z=y, then 2x = y

(paki answer ng maayos please) ​

If sin θ=24/25 and 0 less than or equal to θ less than or equal to π/2, find the exact value of tan 2θ. answers; a) -527/336 b) -336/527 c)7/24 d) 24/7

If 30 lb of rice and 30 lb of potatoes cost ? $27.60? , and 20 lb of rice and 12 lb of potatoes cost ? $15.04? , how much will 10 lb of rice and 50 lb of potatoes? cost?

Iknow its nothing to do with education, but what type of thing should i wrote here? ? : ) its for mcdonald's btw.