يعطيك العافية
وهذه الرسمة لسؤال 48 اللي يبيها . .
سوي لها نسخ من الإكسل وإلصقها للورد
الرسمة في المرفقات . .
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وهذا حل سؤال 22 :
Seats Equation: f + c = 152
Seats Equation: c = 6f + 5
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Substitute for "c" and solve for "f":
f + (6f+5) = 152
7f = 147
f = 21 (# of 1st class seats)
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Solve for "c":
f + c = 152
21 + c = 152
c = 131 (# of coach-class seats)