Five times the first number added to the second number is -21Two times the first number added to the second number is -9β
Accepted Solution
A:
Answerlet the first number be xsecond number be y 5*(x)+y=-21---------->equation 12*(x)+y=-9------------->equation2eq1 * 2:2(5x+y)=2*-2110x+2y=-42eq2 * 5:10x+5y=-4510x+2y=-42-(10x+5y=-45)-----------------0 - 3y=3y=3/-3y=-1sub y=-1 in eq1;5x+y=-215x+ -1=-215x-1=-215x=-21+15x=20x=20/5x=4y=-1