Answer:
see explanation
Step-by-step explanation:
Sami's error is in the second line of working
2x = 6x - 4 ← correct substitution ( subtract 6x from both sides, Sami has added 6x )
- 4x = - 4 ← correct second line ( divide both sides by - 4 )
x = 1
Substitute x = 1 into either of the 2 equations and evaluate for y
Substituting into the second equation
y = 2x = 2(1) = 2
solution is (1, 2 )
Answer:
The asnwer is 3x + 12y + 4
You just add both of the powers , so 6-3 is 3
the answer is 5^3
Answer:
24
Step-by-step explanation:
3x5=15
15+9=24