"GCF"s are usually only relevant to numbers, not to algebraic expressions.
But even if they applied to expressions, the "C" in GCF stands for "common", which
means "same for both", and you only listed a single excpression, so there can't be
anything 'common' about it.
In short, your question loses in at least two ways.
9.2x+5x=35
2x + 5x = 35 7x = 35 x = 35/7 x = 5
(x - 5)(5x - 7)
2x + 5x = 357x = 35x = 35/7x = 5
2x + 5x = 357x = 35x = (35 / 7) = 5
Simplified: 5x + 35 Solved: x = -7
the answer is 5x+35
5x+4x-10 = 35 9x = 35+10 9x = 45 x = 5
The GCF is 5x
8(1+5x) +5 = 13+5x => 8+40x + 5 = 13 +5x => 13+40x = 13+5x => 13-13+40x = 13-13+5x => 40x = 5x => 40x - 5x = 0 => 35x = 0 => 35x/35 = 0/35 => x = 0
3 + 5x = 38 -> 5x = 35 -> x = 7
2x + 5x = 35 7x = 35 divide each side by 7 x = 5