2.
Pearl solved a system of equations using substitution. Did she
do it correctly? How do you...
Mathematics, 25.03.2021 20:50 marithatkid
2.
Pearl solved a system of equations using substitution. Did she
do it correctly? How do you know? If she did not find her error and
solve the system correctly.
2x + (-5 - x) = 20
r-5= 20
X-5 + 5 = 20 + 5
x= 25
System:
y=-5-X
2x + y = 20
Pearl's Solution:
r = 25
y = -30
Answers: 1
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