Here is the work for that problem: 5x+ 2=12 5x= 12-2 5x=10 x= 2
5x-5x = 0
3/5x + 22 = 28 To solve this: Subtract 22 from both sides: 3/5x = 6 Multiply by 5x: 3 = 6*5x Divide by 6: 3/6 = 5x Divide by 5: (3/6)/5 = x Work it out: 3/6 = 0.5 0.5/5 = 0.1 x = 0.1
0
10
5 over 5x+25yThis is because you combine the two fractions together. 3+2=5 which is the numerator and 5x+25y cannot be simplified which is the denominator.
There are 2 unknowns
To work out y=-5x-10 you can plot a graph.
Here is the work for that problem: 5x+ 2=12 5x= 12-2 5x=10 x= 2
the answers -20
If: 3x+2y = 5x+2y = 7 which is the same as 7 = 7 = 7 Then: 3x+2y = 7 and 5x+2y = 7 Subtracting equations: x = 0 Therefore by substitution: x = 0 and y = 3.5
25x2-49y2 is the difference of two squares and can be factored as:- (5x-7y)(5x+7y)
5x+3=8 is a simple equation, and I can tell you off the top of my head the answer is 1. Here's how to work it: 5x+3=8 5x+3(-3)=8(-3) 5x=5 5x(/5)=5(/5) x=1
Neither a, b, c or d show the right answer for -5x-4. The answer is -4/5.
2x + 5x = 357x = 35x = (35 / 7) = 5
5x-5x = 0
-6 = 3 x -2 13 = 5 x 3 - 2 → 5x² + 13x - 6 = (5x - 2)(x + 3)