"the sum of 2" and "twice" "a number" "is" "36"2+2x=36 â–
2*(15 + N)
2 (N + 3)
2*(n+3)
lets presume the number is X: 2(x+x)+2
"the sum of 2" and "twice" "a number" "is" "36"2+2x=36 â–
If the sum of a number and 4 is (X + 4) then twice that is 2(X + 4) which is 2X + 8
2*(15 + N)
2 (N + 3)
2*(n+3)
lets presume the number is X: 2(x+x)+2
The question cannot be answered because it is ambiguous. Does "twice the sum of 16 and a number" mean "2*16 + x" or does it mean "2*(16 + x)"
124 - 38 /2 = 86/2 = 43
2(8 + 5) = 2(13) = 26
A number . . . ' x 'Its reciprocal . . . 1/xTwice its reciprocal . . . 2/xThe sum of (the number) and (twice its reciprocal) . . . x + 2/xThe equation:x + 2/x = 3Multiply each side of the equation by 'x' :x2 + 2 = 3xSubtract 3x from each side:x2 - 3x + 2 = 0Factor the left side, in order to see what's going on:(x - 1) (x - 2) = 0This is true if 'x' is either ' 1 ' or ' 2 '.x = 1The sum of the number and twice its reciprocal . . . 1 + 2/1 = 3X = 2The sum of the number and twice its reciprocal . . . 2 + 2/2 = 3
The sum of the sum and difference gives twice the larger number 14 + 4 = 18 → the larger number is 18 ÷ 2 = 9 The difference of the sum and the difference gives twice the smaller number 14 - 4 = 10 → the smaller number is 10 ÷ 2 = 5 → The two numbers are 9 and 5.
n = number 2(n + 15) ======