Question

Solve the equation. 2x − 3 + 4x = 21

Answer 1

Simplifying 2x + -3 + 4x = 21
Reorder the terms: -3 + 2x + 4x = 21
Combine like terms: 2x + 4x = 6x -3 + 6x = 21
Solving -3 + 6x = 21
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + 6x = 21 + 3
Combine like terms: -3 + 3 = 0 0 + 6x = 21 + 3 6x = 21 + 3
Combine like terms: 21 + 3 = 24 6x = 24
Divide each side by '6'.
x = 4

Answer 2

Add 3 to each side, then cross out the three. The equation can be rewritten as 2x+4x=24
2x plus 4x is 6x, making our equation 6x=24.
Divide by 6 on each side to get the answer x is 4. Your answer is 4