If you want use elimination methode, then you add both sides of the equations:
![\underline{+\left\{\begin{array}{ccc}4x-3y=-10\\2x+3y=4\end{array}\right}\\.\qquad6x=-6\qquad\text{divide both sides by 6}\\.\qquad \boxed{x=-1}\\\\\text{Next, put the value of x to the first or second equation.}\\\\2x+3y=4\\.\qquad\Downarrow\\2(-1)+3y=4\\-2+3y=4\qquad\text{add 2 to both sides}\\3y=6\qquad\text{divide both sides by 3}\\\boxed{y=2}](https://tex.z-dn.net/?f=%5Cunderline%7B%2B%5Cleft%5C%7B%5Cbegin%7Barray%7D%7Bccc%7D4x-3y%3D-10%5C%5C2x%2B3y%3D4%5Cend%7Barray%7D%5Cright%7D%5C%5C.%5Cqquad6x%3D-6%5Cqquad%5Ctext%7Bdivide%20both%20sides%20by%206%7D%5C%5C.%5Cqquad%20%5Cboxed%7Bx%3D-1%7D%5C%5C%5C%5C%5Ctext%7BNext%2C%20put%20the%20value%20of%20x%20to%20the%20first%20or%20second%20equation.%7D%5C%5C%5C%5C2x%2B3y%3D4%5C%5C.%5Cqquad%5CDownarrow%5C%5C2%28-1%29%2B3y%3D4%5C%5C-2%2B3y%3D4%5Cqquad%5Ctext%7Badd%202%20to%20both%20sides%7D%5C%5C3y%3D6%5Cqquad%5Ctext%7Bdivide%20both%20sides%20by%203%7D%5C%5C%5Cboxed%7By%3D2%7D)
Answer:
M = (2L -K)/7N
Step-by-step explanation:
in order to solve for m in the expression K=2L-7NM , we will first combine the like terms and then express m int erms of k,n and l.
<u>solution</u>
K=2L-7NM
combine the like terms
K + 7NM = 2L
7NM = 2L -K
Divide both sides by 7N
7NM/7N = (2L -K)/7N
M = (2L -K)/7N
Therefore from the question K=2L-7NM M is evaluated to be M = (2L -K)/7N
10a+35b=0; 21a-35b=217 ...associative property of addition
31a = 217 .............addition property of equality
a = 7 .....................division property of equality
2(7) +7b = 0 --------------substitution property of equality
14+7b = 0 -----------------mulplication property of equality
7b = -14 --------------subtraction property of equality
b = -2 ----------------simplify