2X + 3
Let the number be x and so the expression is: 2x+3
2x+15
There are two possible (and different) answers: 2x + 3y = 12 or 2*(x + 3y)= 12 The first one is (twice a number) increased by (three times another) The second is twice (a number increased by (three times another)).
2x-3
x=-3 or x=5
Let the number be x and so the expression is: 2x+3
2(3 + x + x2)
2*x+(-4) or x+(-4)+(-4) ?
3x+30let x = "a number"(x+10) = "a number increased by 10"3(x+10) = "3 times a number increased by 10"Expand: 3x+30
2x+15
Just indicate an addition "+3", attached to whatever you decide to call your "number". For example, if you call the original number "x", the number increased by 3 is "x+3".
3(x+21) = 2(x+23)3x+63=2x+46x=-17
There are two possible (and different) answers: 2x + 3y = 12 or 2*(x + 3y)= 12 The first one is (twice a number) increased by (three times another) The second is twice (a number increased by (three times another)).
2(x + 3)= 5? x + 3 = 2½ x = -½
2x-3
x=-3 or x=5
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)"