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Simplifying (5x + -4) + (2x + 8) = 57 Reorder the terms: (-4 + 5x) + (2x + 8) = 57 Remove parenthesis around (-4 + 5x) -4 + 5x + (2x + 8) = 57 Reorder the terms: -4 + 5x + (8 + 2x) = 57 Remove parenthesis around (8 + 2x) -4 + 5x + 8 + 2x = 57 Reorder the terms: -4 + 8 + 5x + 2x = 57 Combine like terms: -4 + 8 = 4 4 + 5x + 2x = 57 Combine like terms: 5x + 2x = 7x 4 + 7x = 57 Solving 4 + 7x = 57 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + 7x = 57 + -4 Combine like terms: 4 + -4 = 0 0 + 7x = 57 + -4 7x = 57 + -4 Combine like terms: 57 + -4 = 53 7x = 53 Divide each side by '7'. x = 7.571428571 Simplifying x = 7.571428571
| (13.8)(13.8)= | | -1=t+(19) | | 3z+3z=36 | | x^2=1+y^2 | | 10(x+4+5)=50+x | | 3v-4v=-4v+3 | | 4x-3x+r-8-x+5r+7= | | 8y+2-2(-2y-5)=3(y-1) | | -(9+3)=-2(2a+1)-7 | | 8(-3)=13-3+1 | | 175=83+(15+8)W | | 8+x/2=24 | | O+13=358 | | 8xy*y+5(x-3y)= | | 3x=xa | | 8(4x-1)-12x=11 | | a-4a=2a+1-5a | | 28-4a=-12 | | 4-7=.75p | | 4(x+30)=6x | | 3a+2b+5a=10 | | 2.4c-2=0.4(1+6c) | | 9z-7=-8z | | 9x+8=27 | | P=7+b+3 | | 4x-2+7=7 | | 0.20x+.05(2-x)=.10(-17) | | 3n-18=n-4 | | (-3u^2+7u+9)-(-7u^2+6u-1)+(7u^2+8u+9)=0 | | 4412.50=0.15(i-8500)+850 | | 21y^2-9y+2= | | 1.1n-7.9-5.8n=7.28 |