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Mathematics
Houston West
13 September, 12:26
Y=-3x+3
Y=5x+19
Solve this system by substitution
+1
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2
)
Royce Chen
13 September, 14:58
0
x=-2
Step-by-step explanation:
You can substitute the first equation into the second:
-3x+3=5x+19
Add 3x on both sides:
3=8x+19
Subtract 19 on both sides:
-16=8x
Divide 8 on both sides:
x=-2
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Clare Bradford
13 September, 15:26
0
x = - 2
y = 9
Step-by-step explanation:
to evaluate this system of equation we would say that
let
Y=-3x+3 ... equation 1
Y=5x+19 ... equation2
substitute equation 2 into equation 1
5x + 19 = - 3x + 3
collect the like terms together
5x + 3x = 3 - 19
8x = - 16
divide both sides by the coefficient of x which is 8
8x/8 = - 16/8
x = - 2
put x = - 8 into equation 1
Y=-3x+3 ... equation 1
y = - 3 (-2) + 3
y = 6 + 3
y = 9
therefore the value of x and y is - 2 and 9 respectively.
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