10040816
06.02.2021 •
Mathematics
Solve the system of linear equations below, using substitution method.
8x+9y=368x+9y=36
3x+4y=163x+4y=16
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Ответ:
Step-by-step explanation:
Given
Required
Solve using substitution method
Make x the subject in
Divide through by 3
Substitute
for x in 
Open bracket
Multiply through by 3
Collect Like Terms
Make y the subject
Substitute 4 for y in
Ответ:
For first equation: it would be 5^2 which is 25 so 25 - 9 = 16 then 2(4 - 3) = 2 x 4-3 = 2 x 1 = 2 so 16 divided by 2 = 8