Question

Maths ch Linear equations in one variable class 8​

Answer 1

Answer:

Question 3

Answer is yes

Step-by-step explanation:

(2×8)-4=12

16-4=12

12=12

so,LHS=RHS

answer is yes

Answer 2

Answer:

$2x - 4 = 12 \\ 2(8) - 4 = 12 \\ 16 - 4 = 12 \\ 12 = 12 \\ {.}^{.} .x = 8 \: satisfies \: the \: equation \: \\ \\ solve \: for \: the \: unknown \: variables \\ (1) \: \: \: \: 3x - 18 = 36 \\ sol. \: \: \: \: \: \: \: \: 3x - 18 = 36 \\ 3x = 36 + 18 \\ 3x = 54 \\ x = \frac{54}{3} \\ x = 18$

$(2) \: \: \: 8y + 2 = - 14 \\sol. \: \: \: \: 8 y= - 14 - 2 \\ 8y = - 16 \\ y = \frac{ - 16}{8} \\ y = - 2 \\ \\ (3) \: \: \: \: 9z - 3 = 24 \\ sol. \: \: \: \: \: \: 9z = 24 + 3 \\ 9z = 27 \\ z = \frac{27}{9} \\ z = 3 \\ \\ \\ (4) \: \: \: 19 + 6x = 7 \\ sol. \: \: \: 6x = 7 - 19 \\ 6x = - 12 \\ x = \frac{ - 12}{6} \\ x = - 2$

hope it helps