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tankabanditka [31]
3 years ago
7

Determine the solution to the system of equations by using substitution. Y=4x+10 Y=-5x-10

Mathematics
2 answers:
amm18123 years ago
7 0
Steps:
1. Substitute the y in 4x + 10 with -5x-10
-5x-10= 4x + 10
2. Add 5x on both sides
-10= 9x + 10
3. Subtract 10 on both sides
-20= 9x
4. Divide by 9 on both sides
5. Your answer is
X= -20/9
kaheart [24]3 years ago
3 0
y=4x+10\\
y=-5x-10\\\\
4x+10=-5x-10\\
9x=-20\\
x=-\frac{20}{9}\\\\
y=4\cdot(-\frac{20}{9})+10\\
y=-\frac{80}{9}+\frac{90}{9}\\
y=\frac{10}{9}\\
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