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Arturiano [62]
3 years ago
10

Help me substitution method define variables

Mathematics
1 answer:
Rina8888 [55]3 years ago
7 0
\left \{ {{S=14+L} (I) \atop {S+L=124}(II)} \right.

<span>Substitute (I) into (II), we have:
</span>S+L=124
(14+L)+L=124
14 + 2L = 124
2L = 124 - 14
2L = 110
L =  \frac{110}{2}
\boxed{L = 55}

<span>Replace (II) in (I), we have:
</span>S=14+L
S = 14+ 55
\boxed{S = 69}

Answer:
each student sell: 
Lori = 55 pizzas
Steve = 69 pizzas
<span>

</span>
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