x + y = 15
4x + 3y = 38
from the first equation, y = 15-x
substitute this value in the second equation as follows:
4x + 3(15-x)= 38
4x + 45 - 3x = 38
x + 45 = 38
x = 38 - 45
so, x = -7
substitute this value to solve for y:
y = 15 -x
y = 15-(-7)
y = 22
It equals 285
45
30
-9
15 plus -3 equals 12 12 divided by -6 equals -2
-15 plus 20 is 5.
8 plus 15 = 23
No. It equals 15.
no
That equals 28
Negative 15 plus positive 20 equals 20 minus 15, which equals 5.
Well there are quite a few numbers that added together will equal negative 15: here are just a few examples: negative 1 plus negative 14 equals negative 15 (-1 + -14 = -15) negative 2 plus negative 13 equals negative 15 (-2 + -13 = -15) negative 3 plus negative 12 equals negative 15 (-3 + -12 = -15) negative 4 plus negative 11 equals negative 15 (-4 + -11 = -15) negative 5 plus negative 10 equals negative 15 (-5 + -10 = -15) negative 6 plus negative 9 equals negative 15 (-6 + -9 = -15) negative 7 plus negative 8 equals negative 15 (-7 + -8 = -15) negative 30 plus positive 15 equals negative 15 (-30 + 15 = -15) negative 29 plus positive 14 equals negative 15 (-29 + 14 = -15) negative 28 plus positive 13 equals negative 15 (-28 + 13 = -15) and on an on it goes.