Answer my question I will give you a brain list tag Check the validity of the result, ( + )
−1 ≠ ()
−1 + ()
−1
for x =
−2/
5
and y =
3/
5
.
Answers
Step-by-step explanation:
To solve practical problems:(A)Read the problem carefully and denote the unknown quantityby variable x, y etc.(i)Form the equation according to the given conditions.(ii)Solve the equation i.e., find the value of the unknownquantity (variable).In Examples 1 to 3, there are four options, out of which one is correct.Choose the correct one.Example 1:The solution of the equation 3x + 5 = 0 is(a) 53(b) – 5(c) -53(d) 5Solution :Correct answer is (c).Example 2:–1 is not a solution of the equation(a) x + 1 = 0(b) x – 1 = 2(c) 2y + 3 =1(d) 2p + 7 = 5Solution :Correct answer is (b).Example 3:Which of the following equations can be formed usingthe expression x = 5:(a)2x + 3 = 13(b) 3x + 2 = 13(c) x – 5 = 1(d) 4x – 9 =21Solution:Correct answer is (a).[Hint: x = 5 on multiplying both sides by 2 gives 2x = 10which on adding 3 both sides gives 2x + 3 =13]An equation is a mathematical sentence that usesan equality sign to show that two expressions havethe same value. All of these are equations.3 + 8 = 11r + 6 = 14– 24 = x – 7 100–502−=To solve an equation that contains a variable, find the value of the variablethat makes the equation true. This value of the variable is called thesolution of the equation.15-04-2018
Answer:
lol
Step-by-step explanation: