jenniferdiaz2005
jenniferdiaz2005
12-06-2020
Mathematics
contestada
2x + 3y = 1240
x = 2y - 10
Respuesta :
unicorn3125
unicorn3125
05-08-2020
Answer:
x = 350, y = 180
Step-by-step explanation:
2x + 3y = 1240
and
x = 2y - 10
so:
2(2y - 10) + 3y = 1240
4y - 20 + 3y = 1240
+20 +20
7y = 1260
÷7 ÷7
y = 180
x = 2•180 - 10 = 360 - 10 = 350
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