The solution for the given equations x + 3y = 5 and x - 3y = -1 are x=2 and y=1.
Step-by-step explanation:
The given is,
......................................(1)
....................................(2)
Step:1
By elimination method,
Subtracting Equations (1) and (2),


( - )
(
) + (
) = (
)
= 6
= 1
Step:2
Substitute the value of y in equation (1),

+ ( 3 × 1 ) = 5
= 5-3
= 2
Step:3
Check for Solution,
Substitute the values of x and y in Eqn (1),

2 + ( 3 × 1 ) = 5
5 = 5
Result:
The solution for the given equations x + 3y = 5 and x - 3y = -1 are x=2 and y=1, by elimination method.
Answer:
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Step-by-step explanation : )
(c) multiply by 0.4
given
= 10
multiply both sides by 0.4 to eliminate the fraction
x = 0.4 × 10 = 4
and
= 10
Answer:
42
Step-by-step explanation:
sinx=cos(x+6)
sinx=sin[90-(x+6)]
x=90-x-6
x=84+x
x+x=84
2x=84
x=42