Question

Solve and check result: 8x + 4 = 3(x − 1) + 7

Answer 1

8x + 4 = 3(x − 1) + 7

8x + 4 = 3x − 3 + 7

Transposing 3x to L.H.S and 4 to R.H.S, we obtain

8x − 3x = − 3 + 7 − 4

5x = − 7 + 7

L.H.S = 8x + 4 = 8 × (0) + 4 = 4

R.H.S = 3(x − 1) + 7 = 3 (0 − 1) + 7 = − 3 + 7 = 4

L.H.S. = R.H.S.

Hence, the result obtained above is correct.