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Solve 4x + 10 = 70

The solution of 4x + 10 = 70 is x = 15.

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The lines y = 4x + 10 and y = 70 meet at x = 151012141618205060708090x = 15y = 4x + 10y = 70
The lines y = 4x + 10 and y = 70 meet at x = 15. 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.

    4x+10=704x + 10 = 70
  2. 2

    Subtract 10 from both sides:

    4x+10−10=70−10 ⇒ 4x=604x + 10 - 10 = 70 - 10 \ \Rightarrow\ 4x = 60
  3. 3

    Divide both sides by 4:

    4x4=604 ⇒ x=15\frac{4x}{4} = \frac{60}{4} \ \Rightarrow\ x = 15
  4. 4

    Check: put x = 15 back into the equation.

    4⋅15+10=60+10=70✓4\cdot15 + 10 = 60 + 10 = 70 \checkmark
LaTeX source of the formulas on this page
\[ 4x + 10 = 70\ \Rightarrow\ x = 15 \]
\[ 4x + 10 = 70 \]
\[ 4x + 10 - 10 = 70 - 10 \ \Rightarrow\ 4x = 60 \]
\[ \frac{4x}{4} = \frac{60}{4} \ \Rightarrow\ x = 15 \]
\[ 4\cdot15 + 10 = 60 + 10 = 70 \checkmark \]

Trying values of x in 4x + 10 = 70

x4x + 10Equals 70?
1362no
1466no
1570yes
1674no
1778no

Questions

What is x in 4x + 10 = 70?

The solution of 4x + 10 = 70 is x = 15.

How do you solve 4x + 10 = 70?

Subtract 10 from both sides to get 4x = 60, then divide both sides by 4 to get x = 15.

How do I check the answer?

Replace x by 15: 4(15) + 10 = 70, which is 70.

Similar equations

    Solve 4x + 10 = 70: x = 15 (steps and check) | WordGPT