28w2 + 196wd + 343d2 = 7(2w + 7d)2.
7d + 2 7 is the only coefficient
7d + 2 < 51 7d < 49 d < 7
The variable is d, in the algebraic expression 7d+2
7
2
what is the constant in algebraic experssion 7d+2
28w2 + 196wd + 343d2 = 7(2w + 7d)2.
7d + 2 7 is the only coefficient
7d + 2 < 51 7d < 49 d < 7
The variable is d, in the algebraic expression 7d+2
7
d is the variable here.
The variable is "d".
-5
2 - 7d = -75 7d = 2 - (-75) 7d = 77 d = 77/7 d = 11
If 16 - 7d = -3 d + 2, collecting like terms with "d" on the left side yields -4d = -14, or d = 14/4 = 7/2.