3x+11+5x=75(add 5x and 3x) 8x+11=75(-11) 8x=64(/ 8) x=8(ANSWER)
4x-7=5x-2 x=-5
5x - 4 = 3x + 6 5x - 3x = 6 + 4 2x = 10 x = 5
If: 5x = 4x+7 Then: 5x-4x = 7 And: x = 7
5x+3y = 51 y = 10x-8 Substituting the bottom equation into the top equation: 5x+3(10x-8) = 51 5x+30x-24 = 51 5x+30x = 51+24 35x = 75 Divide both sides by 35 to find the value of x: x = 75/35 = 15/7 in its lowest terms. Substitute the value of x into the original equations to find the value of y: So: x = 15/7 and y = 94/7
3x+11+5x=75(add 5x and 3x) 8x+11=75(-11) 8x=64(/ 8) x=8(ANSWER)
88=13+5x -13 -13 75= 5x 75/5 =15 x=15
10x+75-5x=110 You can combine like terms, so add the -5x to the 10x. It becomes 5x. 5x+75=110 The next step is to isolate the variable. To do this, you must first move the 75 to the other side of the equation. You can do that by subtracting it from both sides like so: 5x+75=110 -75 -75 5x=35 The variable isn't isolated yet, though. Now you need to get rid of the 5. You can do that by dividing both sides by 5. 5x=35 /5 /5 x = 7.
-5x2 = -75 x2 = 25 x = ±sqrt( 25 ) x = ±___
3x + 11 + 5x = 75 Collect 'like terms on the LHS 8x + 11 = 75 Subtract '11' from both sides 8x = 64 Divide both sides by '8' 8x/8 = 64/8 x = 8
15x = -75, x = -5
x in the equation equals 8 x=8 3*8+11+5*8=75
5x=11y
5x-y equals 18 = -13
9 + 5x = -4x + 63 9 + 9x = 63 9x = 54 9x/9 = 54/9 x = 6
[5x+13]
5x + 4 = 10x - 5 10x - 5x = 4 + 5 5x = 9 x = 1.8