Question

5(2x-1)=85 please solve for x give working out

Answer 1

Answer:

5(2x-1)=85

simplify

10x-5=85

add 5

10x=90

x=9

Hope This Helps!!!

Answer 2

$\bf{5(2x-1)=85}$

Divide both sides by 5.

• $\bf{2x-1=\dfrac{85}{5} }$

Divide 85 by 5 to get 17.

• $\bf{2x-1=17}$

Add 1 to both sides.

• $\bf{2x=17+1}$

Add 17 and 1 to get 18.

• $\bf{2x=18}$

Divide both sides by 2.

• $\bf{x=\dfrac{18}{2} }$

Divide 18 by 2 to get 9.

• $\bf{x=9 \ \ \to \ \ \ Answer}$

Verification

Let x = 9.

• $\sf{5\times(2\times9-1)=85 \ \ \to \ \ \ Multiply }$

• $\sf{5\times(18-1)=85 \ \ \to \ \ \ [Subtract] }$

• $\sf{5\times17=85 \ \ \to \ \ \ [Multiply]}$
• $\sf{85=85 \ \ \to \ \ \ [It \ is \ satisfied \ the \ equality]}$

Checked ✅