Solve 8x + 5 = 93

The solution of 8x + 5 = 93 is x = 11.

8x + 5 = 93\ \Rightarrow\ x = 11

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The lines y = 8x + 5 and y = 93 meet at x = 11. The solution of the equation is the x-coordinate of the point where the two sides are equal.

How to work it out

1
The goal is to get x alone. Undo the operations in the opposite order: first the addition, then the multiplication.
$8x + 5 = 93$
2
Subtract 5 from both sides:
$8x + 5 - 5 = 93 - 5 \ \Rightarrow\ 8x = 88$
3
Divide both sides by 8:
$\frac{8x}{8} = \frac{88}{8} \ \Rightarrow\ x = 11$
4
Check: put x = 11 back into the equation.
$8\cdot11 + 5 = 88 + 5 = 93 \checkmark$

LaTeX source of the formulas on this page

\[ 8x + 5 = 93\ \Rightarrow\ x = 11 \]
\[ 8x + 5 = 93 \]
\[ 8x + 5 - 5 = 93 - 5 \ \Rightarrow\ 8x = 88 \]
\[ \frac{8x}{8} = \frac{88}{8} \ \Rightarrow\ x = 11 \]
\[ 8\cdot11 + 5 = 88 + 5 = 93 \checkmark \]

Trying values of x in 8x + 5 = 93

x	8x + 5	Equals 93?
9	77	no
10	85	no
11	93	yes
12	101	no
13	109	no

Questions

What is x in 8x + 5 = 93?

The solution of 8x + 5 = 93 is x = 11.

How do you solve 8x + 5 = 93?

Subtract 5 from both sides to get 8x = 88, then divide both sides by 8 to get x = 11.

How do I check the answer?

Replace x by 11: 8(11) + 5 = 93, which is 93.

Solve 8x + 5 = 93

How to work it out

Trying values of x in 8x + 5 = 93

Questions

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