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Simplifying 21(7x) = 28(5x + 2) Remove parenthesis around (7x) 21 * 7x = 28(5x + 2) Multiply 21 * 7 147x = 28(5x + 2) Reorder the terms: 147x = 28(2 + 5x) 147x = (2 * 28 + 5x * 28) 147x = (56 + 140x) Solving 147x = 56 + 140x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-140x' to each side of the equation. 147x + -140x = 56 + 140x + -140x Combine like terms: 147x + -140x = 7x 7x = 56 + 140x + -140x Combine like terms: 140x + -140x = 0 7x = 56 + 0 7x = 56 Divide each side by '7'. x = 8 Simplifying x = 8
| 0.5x+2.5=10 | | 4s+12t=4 | | 6=18y | | -5s+t=11 | | 13x+10=5x-30 | | 9.54=-2x+2(x+4.77) | | lnx=35.7 | | v^2+4v-10=0 | | 40+19.95x=59.85+29.95x | | 14x(2-3)=xy | | -1/5-1/2v=-1/7 | | 7x^5/x^5 | | 3a+2b+c=n | | 2/3x-5=3 | | x^2+2xy+y^2-9=25 | | 5x^3-13x+20=0 | | (x-3).3+(2x-5).4+4x=0 | | 11x+19y=13 | | (y-24)+(3y-20)= | | 7!/(4)!3! | | 32.475+(4.87*30)= | | 12x/10y*4y/3xy | | 13x+14x+x=57 | | -10(2x+4)=-(-8-9x)+3x | | w-3.53=9.9 | | 4.2=t-5.4 | | -11(3)2(.12(-12))= | | v+5.84=8.29 | | (1/3)(27)= | | W+5.96=7.14 | | (a2)x1/2 | | p(3)=7!/(4)!3!*0.35^3*0.65^4 |