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Mathematics
Allison Howard
21 November, 20:06
10. 10x + 5y = 15
y=2x-3
Substitution method
+2
Answers (
1
)
Irvin Villarreal
21 November, 23:40
0
x = 1.5
y = 0
Step-by-step explanation:
10x + 5 (2x - 3) = 15
10x + 10x - 15 = 15
20x - 15 = 15
20x = 30
x = 1.5
y = 2 (1.5) - 3
y = 3 - 3
y = 0
Check:
10 (1.5) + 5 (0) = 15
15 + 5 (0) = 15
15 + 0 = 15
15 = 15
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