Question

-8x + 7y = -3 and y = 3

Answer 1

$\large\sf\underline{Given:-}$

• $\sf\:y=3$

$\large\sf\underline{To\:find:-}$

• $\sf\:Value\:of\:x$

$\large\sf\underline{Solution :-}$

$\sf⟹\:-8x + 7y = -3$

$\sf⟹\:-8x + 7 \times 3= -3$

$\sf⟹\:-8x + 21= -3$

$\sf⟹\:-8x= -3-21$

$\sf⟹\:-8x=-24$

$\sf⟹\:8x=24$

$\sf⟹\:x=\frac{24}{8}$

$\tt\pink{⟹\:x=3}$

• Thnku ❣

Answer 2

$\Huge\mathfrak\purple{answεr:}$

${}$

$\bf{{\underline{To~solve}}:}$

• $\sf{-8x+7y=-3}$ when $\sf{y=3}$

$\bf{{\underline{Solution}}:}$

$\rm{~~~~~~~~-8x+7y=-3}$

$\rm\longmapsto{-8x+7(3)=-3}$

$\rm\longmapsto{-8x+21=-3}$

$\rm\longmapsto{-8x=-3-21}$

$\rm\longmapsto{-8x=-24}$

$\rm\longmapsto{x={\dfrac{{\cancel{-}}24}{{\cancel{-}}8}}}$

$\rm\longmapsto{x=\purple{\underline{\boxed{\bf 3}}}}$

$\bf\therefore{{\underline{Required~answer}}:}$

• $\rm{x=\purple{\underline{\boxed{\bf 3}}}}$