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Substitute and Evaluate
Contributed by: Faulkner
(Original author: Basi)
1. Evaluate a + b if a = 7 and b = 3.
a + b =
2. Evaluate a - b if a = 8 and b = 2.
a - b =
3. Evaluate ab if a = 3 and b = -5.
ab =
4. Evaluate 2a + b if a = 4 and b = -8.
2a + b =
5. Determine the value of y if x=12.
y=3x+10
y =
6. Determine the value of x if y=-3
2x+3y=19
x =
7. Determine the value of x if y=5.
y=2x+25
x=
8. Determine the value of y if x=-2.
y=15x+24
y=
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