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Simplifying (6x + 3) + (42 + -1x) = 90 Reorder the terms: (3 + 6x) + (42 + -1x) = 90 Remove parenthesis around (3 + 6x) 3 + 6x + (42 + -1x) = 90 Remove parenthesis around (42 + -1x) 3 + 6x + 42 + -1x = 90 Reorder the terms: 3 + 42 + 6x + -1x = 90 Combine like terms: 3 + 42 = 45 45 + 6x + -1x = 90 Combine like terms: 6x + -1x = 5x 45 + 5x = 90 Solving 45 + 5x = 90 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-45' to each side of the equation. 45 + -45 + 5x = 90 + -45 Combine like terms: 45 + -45 = 0 0 + 5x = 90 + -45 5x = 90 + -45 Combine like terms: 90 + -45 = 45 5x = 45 Divide each side by '5'. x = 9 Simplifying x = 9
| 28-23=8 | | 34-23=8 | | (6x+3)(42-1x)=90 | | 2(x-1)+6=12 | | 31-23=8 | | 24=10+r | | 47-23=8 | | -22=-3+m | | 7-43=36 | | 13m+4n-5m+10n= | | 6x-12=3[x-1] | | 9-43=36 | | (6x+3)(42-x)=90 | | 2u^2-3u=79 | | 39-43=36 | | 5(m-5)=25 | | X*3-3x=45 | | 6x+7+8=19 | | -12=-2x+.2(20-6x) | | 11-43=36 | | 0=2u^2-3u+79 | | 3n+1=n | | 5x^4-10x+3= | | g=(x+y)t | | 6x=14(10+x) | | 2x+6=21-x | | 21r=210 | | 2x(x-6)=80 | | y=.25x^2-x+1 | | 12p^3-8p^2=4p^2(3p-2) | | 12-2w=2w | | 2x+9=x-9 |