what is the solution to the system of equations? 5x+3y=18 and 2x-3y=10 A-2/3,4 B-1 5/9,1 2/3 C- 2 2/3, 1 5/9 D- 4,- 2/3
2 answers:
Answer:
D
Step-by-step explanation:
5x + 3y = 18 → (1)
2x - 3y = 10 → (2)
adding the 2 equations term by term will eliminate the y- term
7x + 0 = 28
7x = 28 ( divide both sides by 7 )
x = 4
substitute x = 4 into either of the 2 equations and solve for y
Substituting into (1)
5(4) + 3y = 18
20 + 3y = 18 ( subtract 20 from both sides )
3y = - 2 ( divide both sides by 3 )
y = -
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