4 years ago

Help!! 2x+3 (x-4)=x-20

1 answer:

8 0

Remember you can do anything to an equation as long as you do it to both sides

2x+3(x-4)=x-20
first distribute
2x+3(x)+3(-4)=x-20
2x+3x-12=x-20
5x-12=x-20
minus x both sides
4x-12=-20
add 12 to both sides
4x=-8
divide both sides by 4
x=-2

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Let x be the number of tons of high grade steel and y be the number of tons ow low grade steel needed.

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