We want to solve the following system of equations using the substitution method.
1 answer:
In the second equation you are given what Y equals, which is (-5x - 3). You would use this equation and plug it into the y value given in the first equation where it says 2y and solve That would be 3x - 2(-5x - 3) = -6 3x + 10x + 6 = -6 3x + 10x = -6 - 6 13x = -12 X = -12/13 Then if you want to solve for Y you can use any equation and plug in the x-value found. I’m going to use equation 2. Y = -5x - 3 Y = -5(-12/13) - 3 Y = 4.615 - 3 Y = 1.615 (-12/13, 1.615) Therefore the x-value is -12/13 and the y-value is 1.615.
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3a+9=54
3a+9-9=54-9
3a= 45
a=15
Check answer:
3(15)+9=54
54=54
Answer is a=15
Addition,subtraction,and multiplication
Answer:
it is A the first one welcome pls mark as brainliest hope this helps
Step-by-step explanation:
Y=4 the answer is y=4 because you had to subtract 8 from both sides.