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X+y=4 x-2y=-5 If the first equation is multiplied by 2 and then the equations are added, the result is =3 3 = 13 o3х=3 3

X+y=4 x-2y=-5 If the first equation is multiplied by 2 and then the equations are added, the result is =3 3 = 13 o3х=3 3
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5 votes
X+y=4

x-2y=-5
If the first equation is multiplied by 2 and then the equations are added, the result is
=3
3 = 13
o3х=3 3

asked
User Felix Ogg
by
7.9k points

1 Answer

3 votes

Answer:

3x = 3

Explanation:

x + y = 4 × 2

= 2x + 2y = 8

2x + 2y = 8 + x - 2y = -5

3x = 3

answered
User Todotresde
by
8.3k points
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