Question

. Solve the following equations by trial and error method :
(a) y - 3 = -5
(b) 5 + 2x = 4x - 3
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Answer 1

Answer:

a)-2

b)4

Step-by-step explanation:

a)y = -5+3

y = -2

b)2x = 4x-3-5

2x-4x= -3-5

-2x = -8

2x = 8

x = 8/2

x = 4

Answer 2

$\large\blue{\maltese{\purple{\bold{AnsweR}}}}$

• a. y = 8
• b. x = 4

$\blue{\underline{\underline{\purple{\mathbb{SOLUTION\: 01:-}}}}}$

➙ y - 3 = 5

➙ y = 5 + 3

➙ y = 8

★ Verification :

᠉ 8 - 3 = 5

᠉ 5 = 5

᠉ LHS = RHS

᠉ hence verified ✔

$\blue{\underline{\underline{\purple{\mathbb{SOLUTION\: 02:-}}}}}$

➙ 5 + 2x = 4x - 3

➙ 5 + 3 = 4x - 2x

➙ 8 = 2x

➙ x = 8/2

➙ x = 4

★ Verification :

᠉ 5 + 2 × 4 = 4 × 4 - 3

᠉ 5 + 8 = 16 - 3

᠉ 13 = 13

᠉ LHS = RHS

᠉ hence verified ✔