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IRISSAK [1]
3 years ago
9

X+y=-13 and 4x+6y=-72

Mathematics
2 answers:
Inga [223]3 years ago
8 0

Answer:

x=-3

y=-10

Step-by-step explanation:

X+y=-13 Equation 1

4x+6y=-72 Equation 2

Using substitution method

Make x the subject in equation 1

X=-13-y Equation 3

Substitute for x in equation 2

4x+6y=-72

4(-13-y)+6y=-72

-52-4y+6y=-72

-52+2y=-72

2y=-72+52

2y=-20

y=-20/2

y=-10

Substitute y for -10 in equation 1

X+y=-13

X-10=-13

x=-13+10

x=-3

Maurinko [17]3 years ago
4 0

Answer:

for x+y is 7+6or 6+7    for 4x+6y is 36+36

Step-by-step explanation:

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