=4

Could you share a bit more context? "=4" is ambiguous. Do you want:

• to solve an equation whose solution is 4,
• to evaluate an expression that equals 4,
• to generate practice problems with the answer 4, or
• something else (e.g., a proof or a concept like equality, limits, etc.)?

If you’d like, here are quick examples where the answer is 4:

• Solve for x: 2x + 8 = 16 -> x = 4
• Solve for x: 3x - 8 = 4 -> x = 4
• Solve for x: (x - 4)(x - 1) = 0 -> x = 4 or x = 1
• Evaluate sqrt(x) with x = 16 -> 4

Tell me your course topic and the exact problem, and I’ll tailor the help.