Grade 8 Maths Linear Equations Quiz (Part A)

• 1

• 3

• 5

• 7

Answer explanation

To solve the equation 2x-3=x+2, we first simplify by moving x to one side. This gives x=5, which is the correct answer.

• 5

• -5

• 6

• -6

Answer explanation

To solve the equation, first, combine like terms to get 5x + 7/2 = 3/2x - 14. Then, move all x terms to one side to get 5x - 3/2x = -14 - 7/2. Simplify to get 7/2x = -35/2. Finally, solve for x to get x = -5.

• 40

• 20

• 10

• 60

Answer explanation

To solve the equation, first distribute the 4/5 to z+10 to get z = 4/5z + 8. Then subtract 4/5z from both sides to get 1/5z = 8. Multiplying by 5 gives z = 40.

Answer explanation

To solve the equation, we need to isolate m. By moving 3m to the other side, we get 5m - 3m = 8/5. Simplifying gives us 2m = 8/5. Dividing by 2, we find m = 4/5.

• 1

• -1

• 2

• -2

Answer explanation

Subtract 3t from both sides to get 2t = -2. Divide by 2 to find t = -1. Therefore, t = -1 is the correct choice.

• 1

Answer explanation

To find y, first isolate y on one side of the equation. Add y to both sides, then subtract 5/3 from both sides. Simplify to get y = 7/3.

• 1

• -1

• 3

• -3

Answer explanation

To solve the equation, first simplify both sides. Then isolate x. The correct answer is x = -1 after solving the equation step by step.

• 30

• 42

• 36

• 28

Answer explanation

To find n, solve the equation: n/2 - 3n/4 + 5n/6 = 21. Simplify to get n = 36, which is the correct answer.

Answer explanation

To solve for x, cross multiply to get 8(x+1) = 3(2x+3). Simplify to 8x + 8 = 6x + 9. Solve for x to get x = 1/2.

• 4

• 6

• 8

• 12

Answer explanation

To solve the equation, cross multiply to get 24x + 48 = 25x + 40. Simplify to find x = 8, which is the correct answer.