2*x+(-4) or x+(-4)+(-4) ?
2x + 7 = 15 Subtract 7 from both sides: 2x = 8 Divide both sides by 2: x = 4
6
49+2x
40 + 2n
A certain number increased by 4
2x + 7 = 15 Subtract 7 from both sides: 2x = 8 Divide both sides by 2: x = 4
15
6
49+2x
40 + 2n
2X + 3
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)).
18
A certain number increased by 4
The algebraic expression for twice a number ( n ) increased by 19 is ( 2n + 19 ). This expression represents taking the number ( n ), multiplying it by 2, and then adding 19 to the result.
Nine less than twice a number equals the same number increased by four?
Let the number be x and so the expression is: 2x+3