8a + 5g
-12g
It is: 12g+9g = 21g
If you're saying that: 12g-19 = 3g-31 then, Swap the sides around, getting common factors all on one side. E.G. 12g-3g = -31+19 9g = -12 g = -12/9 g = -1.333... or -4/3 Alternatively: 12g-19 = 3g-31 9g-19 = -31 9g = -12 g = -12/9 g = -1.333... or -4/3
9g+9
3/2g + 1/6g = -3 9/6g + 1/6g = -3 10/6g = -3 5/3g = -3 5 = -9g g = -5/9
49-9g = 40
9g-142g = -133
In order. 11 - 9 = 2 2 + 8 = 10 The answer is 10g
(9g - 8)(9g + 8)
9g + 2 = 39g = 1g = 1/9 = 0.111111111
There are more molecules in 9g of water than in 9g of sugar. This is because the molecular weight of water is lower than that of sugar, so there are more water molecules present in the same mass as sugar.
9g-14=2g 7g=14 g=2