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3 years ago

HELP I NEED HELP ASAP

Mathematics

2 answers:

saveliy_v [14]3 years ago

5 0

Answer:

x=1.5 y=-0.5

Step-by-step explanation:

first we want to rearrange one of the equations

we will rearrange 3x+y=4 we will do this by subtracting 3x from both sides

y= -3x+4

and replace y in the second equation 5x-7y=11

5x -7(-3x+4)=11

we will distribute -7

5x+21x-28=11

solve for x

26x=39

x=1.5

and solve y by substituting x into one of the equations

y= -3(1.5)+4

y=-0.5

Gwar [14]3 years ago

4 0

Answer:

X=1.5

Y= -0.5

Step-by-step explanation:

3X+Y=4

Y=4-3X

5X-7Y=11

5X-7(4-3x)=11

5X-28+21X=11

26X=11+28

26X=39

X=1.5

Y=4-3(1.5)

Y=4-4.5=(-0.5)

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