Solve for x: 8x + 4 = 3(x − 1) + 7
Ax = 0
Bx = 1
Cx = −1
Dx = 2
Answer & Solution
Correct answer: A. x = 0
Expand the right side: 8x + 4 = 3x − 3 + 7 = 3x + 4. Subtract 3x and 4 from both sides: 5x = 0, so x = 0. A quick check: LHS = 4, RHS = 3(−1)+7 = 4. ✓
Related questions
When variables and numbers appear on both sides, you must simplify:Equations needing more than one operation are described as taking more:Once a solution is found, it should be checked by substituting it back to get a statement The product of any number and its reciprocal equals:A fraction multiplying the variable is best removed by multiplying by its:Solving x divided by 4 equals 3 gives x equal to:Solving 4x equals 20 gives x equal to:Solving x minus 8 equals 5 gives x equal to: