-2(-1+5x)=28
y+1
x + y + z = 6
2x - y + 3z = 14
-x + 4y - z = -2
3x + 2y - z = 7
2x - y + 4z = 10
x + 3y + 2z = 5
2039991
1865638
1727247
add 2/3+1/4+5/6
1881596
1862295
1891813
simplify 3/5+1/2
write down the ratio of sinθ theta by using the sides of right angle triangle?
