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Alexandra [31]
3 years ago
13

Solving by substitution -3x-3y=3 and y=-5x-17

Mathematics
1 answer:
Blizzard [7]3 years ago
8 0
-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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