Question

considerando a equacao linear 4x+3y=12: qual e o valor de x para y=1?

Answer 1

4x+3y=12
4x+3.1=12
4x+3=12
4x=12-3
4x=9
x=9/4

Answer 2

4x + 3y = 12    y = 1

4x + 3*(1) = 12
4x + 3 = 12
4x = 12 - 3
4x = 9
x = 9/4