Question

3x + 1 – 2x = 9 – 3

Answer 1

2) 3x + 1 — 2x = 9 — 3
x = 9-3-1
x = 5

3) 6 + 2x — 4 = x — 1
2x — x = -1 + 4 — 6
x = -3

4) -6 – 2x = -3x – 6
-2x + 3x = -6 + 6
x = 0

5) x + x + 4 + 2 = 8
2x + 6 = 8
2x = 8 – 6
2x = 2
x = 1

6) 2x + x + 5 – 5 = 6
3x = 6
x = 2

7) 2x – x – 3 – 5 = 2
x – 8 = 2
x = 10

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15) 5x–10–3x+3+2x = 20–x–4–3+3x
LHS RHS
LHS: 5x – 10 – 3x + 3 + 2x
5x – 3x + 2x – 10 + 3
4x – 7
RHS: 20 – x – 4 – 3 + 3x
-x + 3x + 20 – 4 – 3
2x + 13

LHS = RHS
4x – 7 = 2x + 13
4x – 2x = 13 + 7
2x = 20
x = 10