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20-9M
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20-9M
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-2M-6N+5-\left(7M-6N-15\right)
Combine 4M and 3M to get 7M.
-2M-6N+5-7M-\left(-6N\right)-\left(-15\right)
To find the opposite of 7M-6N-15, find the opposite of each term.
-2M-6N+5-7M+6N-\left(-15\right)
The opposite of -6N is 6N.
-2M-6N+5-7M+6N+15
The opposite of -15 is 15.
-9M-6N+5+6N+15
Combine -2M and -7M to get -9M.
-9M+5+15
Combine -6N and 6N to get 0.
-9M+20
Add 5 and 15 to get 20.
-2M-6N+5-\left(7M-6N-15\right)
Combine 4M and 3M to get 7M.
-2M-6N+5-7M-\left(-6N\right)-\left(-15\right)
To find the opposite of 7M-6N-15, find the opposite of each term.
-2M-6N+5-7M+6N-\left(-15\right)
The opposite of -6N is 6N.
-2M-6N+5-7M+6N+15
The opposite of -15 is 15.
-9M-6N+5+6N+15
Combine -2M and -7M to get -9M.
-9M+5+15
Combine -6N and 6N to get 0.
-9M+20
Add 5 and 15 to get 20.
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y = 3x + 4
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Matrix
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Simultaneous equation
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
Differentiation
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Limits
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