Question

(x-5)/10+(1-2x/5=(3-x)/4

Answer 1

Resposta:

x = -21

Explicação passo a passo:

${x-5\over10}+{1-2x\over5}={3-x\over4}\\ \\ \\ mmc(10,5,4)=20\\ \\ \\ 2(x-5)+4(1-2x)=5(3-x)\\ \\ 2x-10+4-8x=15-5x\\ \\ 2x-8x+5x=15+10-4\\ \\ 7x-8x=25-4\\ \\ -x=21~~~~\times(-1)\\ \\\boxed{ x=-21}$