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Simplifying x + (x + 5) + (x + 10) = 75 Reorder the terms: x + (5 + x) + (x + 10) = 75 Remove parenthesis around (5 + x) x + 5 + x + (x + 10) = 75 Reorder the terms: x + 5 + x + (10 + x) = 75 Remove parenthesis around (10 + x) x + 5 + x + 10 + x = 75 Reorder the terms: 5 + 10 + x + x + x = 75 Combine like terms: 5 + 10 = 15 15 + x + x + x = 75 Combine like terms: x + x = 2x 15 + 2x + x = 75 Combine like terms: 2x + x = 3x 15 + 3x = 75 Solving 15 + 3x = 75 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-15' to each side of the equation. 15 + -15 + 3x = 75 + -15 Combine like terms: 15 + -15 = 0 0 + 3x = 75 + -15 3x = 75 + -15 Combine like terms: 75 + -15 = 60 3x = 60 Divide each side by '3'. x = 20 Simplifying x = 20
| 80-x+18=66 | | 1-2(-5)=11 | | 1-2w=11 | | 8x+9y=90 | | 28-4a=6[2a-2]+24 | | (5x)(4y)= | | 10=5(7-4) | | 1/2(n-5*4) | | 10=5(6-4) | | 10=5(-3-4) | | 0.50x+0.15(70)=31.5 | | 7[a-4]-2a=19+3[a+3] | | y=-x^2+9x-12 | | (4x)(7)= | | Cos(62)=12/x | | 10=5(-10-4) | | 3x=5+6(3+4x) | | 10=5(u-4) | | 10(0.4+0.5g)=4 | | 3x(x)=507 | | 3(x-5)-4(2x-4)=2x+22 | | (-4x)(-3y)= | | 35/7-9=-19 | | X(6/2y) | | -49/7-9=-19 | | 2x^2+8x+60=0 | | 21/7-9=-19 | | 12x-10=13+11x | | -8r+5+7-2r= | | 99-u=186 | | 6q=18-2 | | -42/7-9=-19 |