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Solve 7x + 7 = 98

The solution of 7x + 7 = 98 is x = 13.

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The lines y = 7x + 7 and y = 98 meet at x = 13810121416186080100120140x = 13y = 7x + 7y = 98
The lines y = 7x + 7 and y = 98 meet at x = 13. The solution of the equation is the x-coordinate of the point where the two sides are equal.

How to work it out

  1. 1

    The goal is to get x alone. Undo the operations in the opposite order: first the addition, then the multiplication.

    7x+7=987x + 7 = 98
  2. 2

    Subtract 7 from both sides:

    7x+7−7=98−7 ⇒ 7x=917x + 7 - 7 = 98 - 7 \ \Rightarrow\ 7x = 91
  3. 3

    Divide both sides by 7:

    7x7=917 ⇒ x=13\frac{7x}{7} = \frac{91}{7} \ \Rightarrow\ x = 13
  4. 4

    Check: put x = 13 back into the equation.

    7⋅13+7=91+7=98✓7\cdot13 + 7 = 91 + 7 = 98 \checkmark
LaTeX source of the formulas on this page
\[ 7x + 7 = 98\ \Rightarrow\ x = 13 \]
\[ 7x + 7 = 98 \]
\[ 7x + 7 - 7 = 98 - 7 \ \Rightarrow\ 7x = 91 \]
\[ \frac{7x}{7} = \frac{91}{7} \ \Rightarrow\ x = 13 \]
\[ 7\cdot13 + 7 = 91 + 7 = 98 \checkmark \]

Trying values of x in 7x + 7 = 98

x7x + 7Equals 98?
1184no
1291no
1398yes
14105no
15112no

Questions

What is x in 7x + 7 = 98?

The solution of 7x + 7 = 98 is x = 13.

How do you solve 7x + 7 = 98?

Subtract 7 from both sides to get 7x = 91, then divide both sides by 7 to get x = 13.

How do I check the answer?

Replace x by 13: 7(13) + 7 = 98, which is 98.

Similar equations

    Solve 7x + 7 = 98: x = 13 (steps and check) | WordGPT