Section: Mathematical Reasoning
26)
Solve using the substitution method:
NOTE: Round long decimals to the nearest one hundredth.
y = 3x - 87
3x + 2y = 21
-
-
-
-
Explanation
If y = 3x - 87, then the following is true per the substitution method:
3x + 2(3x - 87) = 21
3x + 6x - 174 = 21
9x = 195
x = 21.67
y = 3(21.67) - 87
y = -21.99
Don't have time to finish?
Enter your email address and we'll send you a link to continue your exam.
