10 - 2n = 30
10 - 2n + 10 = 30 + 10
2n = 40
2n/2 = 40/2
n = 20
I'm an orange!
x+30 = 3x-50 x-3x = -50-30 -2x = -80 x = 40
13-3x = 43 -3x = 43-13 -3x = 30 x = -10
you multiply it
x - x2 - 9x + 14 = 0 ; whence, x2 + 8x = 14 , x2 + 8x + 16 = 30 , and x + 4 = ±√30 . Therefore, x = ±√30 - 4 .
I'm an orange!
30
30
0.75x = 30 Divide both sides by 0.75:- x = 40
45 = 30 + m Subtract 30 from both sides: 15 = m
(3,3)
We don't know what operation you want. 1 x 30 = 30 0 + 30 = 30 60 - 30 = 30 900/30 = 30
30p = 900 divide each side by 30 p = 30 ------------ and 30 * 30 = 900 0r 30^2 = 900
It does not help you.
v is -15... -15*2 = -30... -30+11= -19.
x = 6 and y = -2
33