stojo22
stojo22
10-11-2016
Mathematics
contestada
solving by substitution -3x-3y=3 and y=-5x-17
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cheetahdoglover1
cheetahdoglover1
10-11-2016
-3x - 3 (5x - 17) = 3
-3x - 15x + 51 = 3. combine like terms
-18 x + 51 - 51 = 3 - 51
-18x = -48 divide by -18
x = 3
put 3 in for x
-3 (3) -3y = 3 multiply
-9 +9 - 3y = 3 + 9 combine like terms
-3y = 12 divide by -3
y = -4
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