Answer:
C (7,-1)
Step-by-step explanation:
Let's solve your system by substitution.
y = −2x + 13; 4x + 8y = 20
Step: Solve y = −2x + 13 for y:
y = −2x + 13
Step: Substitute−2x + 13 for y in 4x + 8y = 20:
4x + 8y = 20
4x + 8(−2x+13) = 20
−12x + 104 = 20 (Simplify both sides of the equation)
−12x + 104 + −104 = 20 + −104 (Add -104 to both sides)
−12x = −84
−12x / −12 = −84 / -12 (Divide both sides by -12)
x=7
Step: Substitute 7for x in y = −2x + 13:
y =−2x + 13
y = (−2)(7) + 13
y = −1 (Simplify both sides of the equation)
Answer:
x = 7 and y = −1
BRAINLIEST?
