seven plus x
7 + x
Twice the quantity of seven plus x
2(7 + x)
Difference of x and seven
x - 7
The phrase is the same as means equal to. This is our algebraic expression:
2(7 + x) = x - 7
If the problem asks you to solve for x, distribute 2 on the left side:
14 + 2x = x - 7
Subtract x from the right side
14 + x = -7
Subtract 14 from each side
x = -21
7 + x
Twice the quantity of seven plus x
2(7 + x)
Difference of x and seven
x - 7
The phrase is the same as means equal to. This is our algebraic expression:
2(7 + x) = x - 7
If the problem asks you to solve for x, distribute 2 on the left side:
14 + 2x = x - 7
Subtract x from the right side
14 + x = -7
Subtract 14 from each side
x = -21