19:20 Ma’am the value of I is 40 so the (87=2x40=80+7) final equation is 87=80+7 And Ma’am BTW actually we use lowercase or small alphabets to denote variables not capital so it is actually l (l for lion) like (x, y, z, p, q, r…) Thank You..🙃
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Let us assume the lowest score be x. Given, Highest score = 87 Highest marks obtained by a student in her class is twice the lowest marks plus 7 The given above statement can be written in the equation form as, 2x + 7 = Highest score 2x + 7 = 87 By transposing 7 from LHS to RHS, it becomes -7 2x = 87 - 7 2x = 80 Now, Divide both the side by 2 2 x 2 = 80 2 x = 40 Hence, the lowest score is 40.
I'm Pihu Singh. From class 7 (A) from the school Renaissance ( Senior Wing ) Your explanation is very very nice I really understand by your explanation ☺️☺️ Thank you ma'am 💖💖😊
Main main bahut thak Gaya Hun aapki video puri dekhi hai yah wali video Maine bahut dekhiae Puri mein bahut achcha lag raha hai ab main thak Gaya Hun bahut jyada
Just Remember that combination of Constant Terms & variable is called Algebraic Expression And when it got equate with zero it becomes algebraic equation ☺️
19:00 mam, first we arrange into =2l +7=87 The equation is additon so subtract in opposite side So, 2l+7-7 and the +7 and-7 cut together anf the -7 value get =87-7 so the value of 2l = 80 now 2l=80 So the value is multiple but division in opposite side 2l/2 =80/2 So the value of l= 40
Sorry mam you told this method not to use but school is teaching this method only not transposition method so mam you tell me to what method I want to use
But ma'am Little i t was confusing but in the end i learnt everything i 5,6,7 i always see whenever exam is there i will see one day before math exam thanks you 😊😊
Timestamps - 00:00 Introduction 01:20 Algebraic Expression 05:35 Variables 07:15 Equation 13:20 How to form equations using statements 19:25 Balanced equation 22:50 The solution of an equation 26:05 Transposition Method 37:50 Practice questions
Ma’am you did ex 4.1 ninth part wrong you didn’t place a negative sign before 2 in the lbs part of the equation which then gives the answer as no because -2 is not equal to +2
Mam question complete the table mai 3rd part mai m/3 hai m/2 nai hai . LHS = 0/3=0 RHS = 2 SO, LHS ≠ RHS The equation is NO satisfied. If all students agaree so replied it.