Question

solve x/4 = - 4
solve 4y + 7 = 19 and verify your answer

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Answer 1

Answer:

1. x = -16
2. y = 3

Step-by-step explanation:

1 •} $\sf \frac{x}{4} = -4$

$\sf →x = - 4 \times 4$

$\sf →x = - 16$

❍ Verification :-

Putting x = -16

$→\sf \dfrac{x}{4} = -4$

$\sf → \dfrac{ - \cancel{16}}{\cancel{4}} = - 4$

$\sf → - 4 = - 4$

L.H.S. = R.H.S.

Hence the value is correct.

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2•} 4y + 7 = 19

→ 4y = 19 - 7

→ 4y = 12

$\sf →y = \dfrac{\cancel{12}}{\cancel{4}}$

→ y = 3

❍ Verification :-

Putting y = 3

→ 4y + 7 = 19

→ 4(3) + 7 = 19

→ 12 + 7 = 19

→ 19 = 19

L.H.S = R.H.S.

Hence the value is correct.

Answer 2

Answer:

1) Solve 4y + 7 = 19

= 4y =19 -7

= 4y = 12

= y = 12/4

= y = 3

Verification :-

Substituting y = 3 we get ,

LHS = 4×3+7

= 12+ 7

= 19

so,

LHS=RHS

Hence verified

2) Solve x/4 = -4

= x=4×(-4)

= x= -16