Question

solve: linear equation =3(x+4)=21​

Answer 1

Answer:

In mathematics, a linear equation is an equation that may be put in the form {\displaystyle a_{1}x_{1}+\cdots +a_{n}x_{n}+b=0, } where x_{1}, \ldots, x_{n} are the variables, and {\displaystyle b, a_{1}, \ldots, a_{n}} are the coefficients, which are often real numbers

Answer 2

$\large\sf\underline{Given}$

$3(x + 4) = 21 \\ \\ = > 3x + 12 = 21 \\ \\ = > 3x = 21 - 12 \\ \\ = > 3x = 9 \\ \\ = > x = \frac{9}{3} \\ \\ = > x = 3$

• Thnku :)