1. Resolva os sistemas de equações
do 1° grau:
a) {
X + y = 5
3x - y = 11
b)
2x + 3y =8
5x - 2y = 1
x - y = 2(x - y)-2
4x - 3y = 7
c)
1

This is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 5 terms.