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4(a+b) = 8
a+b = 4
subtract in second equation:
-5a = 33
a = 33/-5
Therefore b = 8.6

4a + 4b =8
+ -4a + b =37
------------------
5b = 45
--- ---
5 5
------------------
b = 9

how do I type an ordered pair for these equations?

There must be a few solutions

b=9
4a + 4b =8
4a+4(9)=8
4a=-28
a=-7
Ordered pair is (-7,9)

Can you help me rework the next equation that I listed?
4a + 5b =13
-4a +b =17

4a + 5b =13
+ -4a +b =17
-----------------
6b=30
b=5
4a+5(5)=13
4a+25=13
4a=-12
a=-3
(-3,5)

Thank you Grazes & Violy. I appreciate the help.

np.