mcaninch36
25.08.2019 •
Mathematics
How to solve system of equations by elimination
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Ответ:
x+y=12
x-y=8 +
2x=12+8
2x=20
x=10
subsitute
x=10
10+y=12
y=2
just try to cancel out the unknown terms so you are left with less
Ответ:
x-45=65+35 first you add what you can
x-45=100 then you
+45 +45
x=145
Ответ:
x^2-3x-6x+18
x^2-9x+18
(b) 3(2m-t)=2t+7
6m-3t=2t+7
6m=2t+3t+7
6m=5t+7
m=(5t+7)/6