Question

solve and verify 3(5x-7)+2(9x-11)=4(8x-7)-111 must verify don't answer without the verification

Answer 1

Step-by-step explanation:

15x-21+18x-22=32x-28-111

1. 15x+18x-32x=21+22-28-111. 33x-32x=15-111. x=-96.

Answer 2

Solve :-

$\implies 3(5x - 7) + 2(9x - 11) = 4(8x - 7) - 111 \\ \\ \implies \: 15x - 21 + 18x - 22 = 32x - 28 - 111 \\ \\ \implies \: 33x - 43 = 32x - 139 \\ \\ \implies \: 33x - 32x = - 139 + 43 \\ \\ \implies \: { \bold{x = - 96}}$

Verification : put x in the given equation

L.H.S

$\implies \: 3(5 \times ( - 96) - 7) + 2(9 \times ( - 96) - 11)$

= 3 ( -480 - 7) + 2 ( -864 - 11)

= 3 ( -487) + 2 ( -875)

= -1461 - 1750

= -3211 ✔

R.H.S

$\implies \: 4(8x - 7) - 111$

= 4 ( 8 × (-96) - 7 ) - 111

= 4 ( -768 - 7) - 111

= 4 ( -775) - 111

= -3100 - 111

= -3211 ✔

•°• L.H.S = R.H.S

Hence verified !

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