Question

Please help me I will mark u branily also worth a lot of points

Answer 1

• option (a) x + 18 = 90

Explanation:

Which number we have added to 18 to get 90 and we have LHS = RHS

First of all make the equation :

unknown number added to 18 we get 90

• x + 18 = 90
• x = 90 - 18
• x = 72

Put 72 in the variable of x

• 72 + 18 = 90
• 90 = 90

Therefore, LHS = RHS.