2) -7r - 15 = -2r; -3
Plug -3 for r.
-7(-3) - 15 = -2(-3)
6 = 6
The answer for #2 is yes.
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4) -3p = 4p + 35; -5
Plug -4 for p.
-3(-5) = 4(-5) + 35
15 = 15
The answer for #4 is yes.
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6) 5 - 15s = 8 - 16s; 3
Plug 3 for s.
5 - 15(3) = 8 - 16(3)
-40 = -40
The answer for #6 is yes.
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8) 6a + 3 = 3(3a - 2); 4
Plug 4 for a.
6(4) + 3 = 3(3*4 - 2)
27 = 30
The answer for #8 is no.
