Solve the system of equations using the substitution method.{4x+5y=7 {y=3x+9Enter your answers in the boxes.x= y=
Question
Answer:
4x+5y=7y=3x+9
1) 4x+5(3x+9)=7 2) y=3(-2)+9
y= -6 +9
4x+15x+45=7 y=3
19x+45=7
19x= -38
x= -2
x is -2 and y is 3
solved
general
11 months ago
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