7x - 54 = 5
Add 54 to each side:
7x = 59
Divide each side by 7:
x = 59/7 = about 8.4286 (rounded)
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-7x + 5 = -9 -7x = -14 7x = 14 x = 2
23 = 7x + 7x - 5 = 14x - 5 14x = 23 + 5 = 28 x = 28/14 = 2
7x is still the slope, no matter what x equals.
4x+5=7x-8 the ansewr is 3.25
-9-7x=-5 express first the equation in terms of x, where, 7x=-9+5 then, 7x=-4 thus, x=-4/7