3x + 4(x + 1) = 67
7x + 4 = 67
7x = 67-4 = 63
x = 9
The smaller integer is 9.
The answer is (-7,3). Hope it helps. Tell me if you need the whole work or if I'm wrong.
X<4 represents "all numbers smaller than 4, including all negative numbers."
In interval notation, this comes out to (-infinity, 4).
For Y=2x+10 X=y/2 -5. Second x/3