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1969976289
04.04.2020 •
Mathematics
Y=-3x+3
Y=5x+19
Solve this system by substitution
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Ответ:
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.
Ответ:
$1365
Step-by-step explanation:
say S= shirt and P=pants
S+P=455
S= 95+P
95+P+P= 455
2P + 95 = 455
2P= 360
P= 180
S= 275
3(275) + 3(180)= x
x= 1365