Answer:
x=9 and y=3
Step-by-step explanation:
Let's solve your system by substitution.
−4x+6y=−18 and y=−2x+21
Rewrite equations:
y=−2x+21;−4x+6y=−18
Step: Solve y=−2x+21for y:
y=−2x+21
Step: Substitute−2x+21foryin−4x+6y=−18:
−4x+6y=−18
−4x+6(−2x+21)=−18
−16x+126=−18(Simplify both sides of the equation)
−16x+126+−126=−18+−126(Add -126 to both sides)
−16x=−144
−16x
−16
=
−144
−16
(Divide both sides by -16)
x=9
Step: Substitute9forxiny=−2x+21:
y=−2x+21
y=(−2)(9)+21
y=3(Simplify both sides of the equation)
Answer:
x=9 and y=3
Answer: 10 Smores
Step-by-step explanation:
All I did was multiply by 10
2×10=20
So...
1×10=10
Answer:
296541907200
Step-by-step explanation:
23 * 22 * 21 * 20 * 19 * 18 * 17 * 16 * 15 = 296541907200
Answer:
-3-3x=12
-3x=15 add 3 to both sides
x=-5 divide by -3 on both sides
x is equal to -5
if it helps plz mark brainliest
Step-by-step explanation:
It's 1.5
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