math
posted by chin .
A stadium have to section a & B .
tickets for section A cost $A each .
tickets for section B cost $B each .
johanna paid $105 for 5 section A and 3 section B.
raiyah paid $63 for 4 section A and 1 section B .
i) Write two eguations
ii) Calculate the value of A and B

math 
sydney
i) 105 = 5A + 3B
63 = 4A + 1B
ii)you solve this system equation by either by substitution or elimination
cheers 
math 
maribel
so baisically multiply the 2nd equation by 3 so you can subtract the 3bs let me show you
105=5a+3b
189=12a+3b

84=7a
12=a
then substitute
105=5(12)+3B
105=60+3B
45=3B
15=B
:)
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