X = number.X + 8====
x + 9x = 10x
x + 5
Suppose the number is x. Then x2 = 5x + 24 or x2 - 5x - 24 = 0 Then x2 - 8x + 3x - 24 = 0 or x(x - 8) + 3(x - 8) = 0 that is (x - 8)*(x + 3) = 0 so that x = 8 or x = -3 Since the number is a natural number, it cannot be -3, and so the answer is 8.
64
X = number.X + 8====
8+3*x
x+8+x/5 = 20 x = 10
3(x+8)
it means 8+3x 8 increased (plus) three times a number (3x) x is an unknown number so it is often called a number
x-4=8+x/5 5(x-4)=5(8+x/5) 5x-20=8+x 4x=28 x=7
Suppose the number is x. Then 2*x + 8 = 34 Subtract 8 from both sides: 2*x = 26 Divide both sides by 2: x = 13
15 increased by two times a number x
n+7 or X+7
x + 12. If the unknown number is represented by x, the expression for a number increased by 12 would be x + 12.
x - 2 = 7 + x/4 4x - 8 = 28 + x 3x = 36 x = 12
Let the number be represented by x. The product of a number decreased by 3 is (x-3), and increased by 4 is (x-3+4) = (x+1). According to the given condition, this product is equal to 8. Therefore, the polynomial equation representing this condition is: x+1 = 8.