Question

A respostarde do cálculo de 3x+11y=14 5x+10y=15

Answer 1

3x+11y = 14 [×5] => 15x + 55y = 70
5x+10y = 15 [×3] => 15x + 30y = 45
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25y = 25
y = 25/25
y= 1

3x+ 11y = 14
3x + 11 . 1 = 14
3x + 11 = 14
3x = 14 - 11
3x = 3
x = 3/3
x = 1