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Solve linear equations and systems of 2 equations with step-by-step solutions. Uses substitution and Cramer's rule for accurate results.
An equation is a mathematical statement asserting that two expressions are equal. Solving an equation means finding the value(s) of the variable(s) that make the statement true.
ax + b = c
Solution
x = 2
Steps
2x + 3 = 7
2x = 7 - 3 = 4
x = 4 / 2 = 2
Formula
ax + b = c → x = (c − b) / aa = Coefficient of the variable x
b = Constant term on the left side
c = Constant term on the right side
Worked Example
Solve 2x + 3 = 7
Did you know? The word 'algebra' comes from the Arabic 'al-jabr,' meaning 'reunion of broken parts,' from the 9th-century book by Persian mathematician al-Khwarizmi (source: Encyclopædia Britannica).
Sources
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