Isolate the variable by dividing each side by factors that don’t contain the variable.
X = -2
Hope this helps!
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145, you subtract the total number with how many you sold
523-378=145
The answer is C
adult: x
student: y
x+y=120
6x+4y=560
Let Sarah's age be s and Antonio's age be a.
According to your question,
2a + 3s = 34
s = 5a
substituting the value of s in eq. 1,
2a + 3(5a) = 34
= 2a + 15 a = 34
17a = 34
thus, a = 34/17 = 2
substituting the value of a is s,
s = 5(2)
= 10
Thus, Sarah's age is 10 years and Antonio's age is 2 years.
