Question

if 2x + 10 = 24, 4x = is equals to

Answer 1

Answer:

28

Step-by-step explanation:

$2x + 10 = 24 \\ 2x = 24 - 10 \\ 2x = 14 \\ x = 7 \\ 4x = 4 \times 7 \\ = 28$

Answer 2

Step-by-step explanation:

(i) x + 3 = 0

LHS = x + 3

Put x = 3, we get

LHS = 3 + 3 = 6 ≠ RHS

So, the equation is not satisfied.

(ii) x + 3 = 0

LHS = x + 3

Put x = 0, we get

LHS = 0 + 3 = 3 ≠ RHS

So, the equation is not satisfied.

(iii) x + 3 = 0

LHS = x + 3

Put x = -3, we get

LHS = -3 + 3 = 0 = RHS

So, the equation is satisfied.

(iv) x - 7 = 1

LHS = x - 7

Put x = 7, we get

LHS = 7 - 7 = 0 ≠ RHS

So, the equation is not satisfied.

Step-by-step explanation: