Question

Solve by the multiplication with add or subtract method
3x - 4y = 45
7x + 6y = 13

Answer 1

A) 3x - 4y = 45
B) 7x + 6y = 13
Multiply A) by 1.5
A) 4.5x -6y = 67.50
B) 7x +6y =13
Ading both equations

11.5x = 80.50
x = 7

Substituting 7 into equation B
49 + 6y = 13
6y = 36
y = -6

Answer 2

Thank you guys so much

Answer 3

Is this a substitution or elimination problem?

Answer 4

Just the multiplication with adding and substracting

Answer 5

oh ok.