5n + 15 = 25 you subtract 15 from both sides then you get 10 then divided 5n by 10 you get 2n
x = -10
x - 2x + 10 + 4x = 70 Combine like terms: 3x + 10 = 70 Subtract 10 from both sides: 3x = 60 Divided both sides by 3: x = 20
2x+8=10... Subtract 8 on both sides, then devide by 2... 2x=2... x=1
3/Y+7\Y=9 =>Y=10\9
5n + 15 = 25 you subtract 15 from both sides then you get 10 then divided 5n by 10 you get 2n
10+r = 2r Subtract r from both sides:- r = 10
x = -10
You can first subtract 2 from 12 to get 10. Then when you bring 10 across the = sign, it becomes -10, so 42-10 is 32.
x - 2x + 10 + 4x = 70 Combine like terms: 3x + 10 = 70 Subtract 10 from both sides: 3x = 60 Divided both sides by 3: x = 20
-10
2x+8=10... Subtract 8 on both sides, then devide by 2... 2x=2... x=1
3/Y+7\Y=9 =>Y=10\9
600 divided by 60 equals 10.
10
8x + 2 = 6x + 10 Subtract 6x from both sides: 2x + 2 = 10 Subtract 2 from both sides: 2x = 8 Divide by 2: x = 4 x = 4
8 = 10x/(10 + x) Multiply both sides by (10 + x) to give: 8*(10+x) = 10x Simplify: 80 + 8x = 10x Subtract 8x from both sides: 80 = 2x Divide both sides by 2: 40 = x