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Mathematics 7 Online
OpenStudy (themockingjay):

2x-3=7x+21

OpenStudy (deathsblood):

x = -4.8

OpenStudy (themockingjay):

how?

OpenStudy (deathsblood):

this may take a bit hold on

OpenStudy (deathsblood):

Simplifying 2x + -3 = 7x + 21 Reorder the terms: -3 + 2x = 7x + 21 Reorder the terms: -3 + 2x = 21 + 7x Solving -3 + 2x = 21 + 7x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-7x' to each side of the equation. -3 + 2x + -7x = 21 + 7x + -7x Combine like terms: 2x + -7x = -5x -3 + -5x = 21 + 7x + -7x Combine like terms: 7x + -7x = 0 -3 + -5x = 21 + 0 -3 + -5x = 21 Add '3' to each side of the equation. -3 + 3 + -5x = 21 + 3 Combine like terms: -3 + 3 = 0 0 + -5x = 21 + 3 -5x = 21 + 3 Combine like terms: 21 + 3 = 24 -5x = 24 Divide each side by '-5'. x = -4.8 Simplifying x = -4.8

OpenStudy (themockingjay):

thank you

OpenStudy (deathsblood):

np

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